Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97dcf9c4db9a42e…

MALICIOUS

PDF

141.1 KB Created: 2021-06-28 19:10:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 0e0a6d50b64c363b7231d0730fa6b04d SHA-1: 9b210170acd3410151532b38f1d71e33eaa1a12c SHA-256: e97dcf9c4db9a42e540c68a06714a8bfc4edd8ee62765b0ee5df39f52a8c43ea
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document exhibits multiple indicators of malicious intent, including a high ML classifier score and ClamAV detection as a phishing trojan. The presence of a 'download button' lure and instructions for a 'password-protected archive' suggest a social engineering tactic to trick users into downloading a payload. The numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, are likely used to host or redirect to malicious content, potentially leveraging JavaScript for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9354

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://inwebjor.ru/uplcv?utm_term=jesus+lived+in+india+pdf+free+download PDF link annotation
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070ca6e6f2a5---bavotijogefulenev.pdfIn PDF document text
    • http://master-sign.ru/ckfinder/userfiles/files/sumipagoxojar.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/rejariwafifagejafazotuna.pdfIn PDF document text
    • http://myphamlulanjina.com/upload/files/85017291970.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160be03d7ae82b---kirivobo.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a4e623573b5---vevidipukedezutogebudovi.pdfIn PDF document text
    • https://migger.dk/userimages/file/wowixeg.pdfIn PDF document text
    • http://airconbank.com/upload/fckeditor/file/68791892529.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a1d495f06---bevikomomuvesazipu.pdfIn PDF document text
    • http://mikailang.net/userfiles/file/20210626015331_159482932.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/2406a963c4bcaf50f360db782752bae7/pinepizojudi.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607996ef9dce4---zinubemagudadopafafuluj.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6b6977c5e6---26351222484.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/2t4kcdv1t60ns934no7nmgfof8/35481335024.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/8884501f755d29b9cd4a44d923c844e7/88482490846.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ad5e5d19e48---rikejekufirajixorumoduba.pdfIn PDF document text
    • https://equator-maritime.com/userfiles/file/teribalepumutejevobufefum.pdfIn PDF document text
    • http://medicapoland.pl/uploaded/file/55318405020.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/78d6da709fa9731cd636410a5e4a9414/37278735454.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/6ebc2ddca9f4922872221f5d08d8ce3b/15176793887.pdfIn PDF document text
    • https://elesud.it/img_pagine/file/bajatita.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609e9de6b123b---7857176694.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9b735c197---43221395390.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/ec8378d85df409750828ea0d2caeb9e3/60826396536.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/d91dfff3484b030600842217def36184/jatajawudotijugiditosu.pdfIn PDF document text
    • http://tetraeng.it/userfiles/files/85211349728.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E79 14564 bytes
SHA-256: fac31b3495888dd8583fc613af14f5a7b583c47499fece3dbed018aa34ebbc00
font_01_sfnt_off0001ba49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BA49 22964 bytes
SHA-256: 92bdb011335a57e03bf7d0b664a8af8b1b527376830cfb0dbb9411ee235e8f37
font_02_sfnt_off0001f429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F429 10636 bytes
SHA-256: a69dd182c04e91c59c91b62d1c149ec16f2fb5d5ff581f69a975b601850292bb
font_03_sfnt_off00020cab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20CAB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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