Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd6a827f5049e35a…

MALICIOUS

PDF

114.2 KB Created: 2021-08-04 04:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a6b298a661c59f49d0f60662d522752e SHA-1: 3bcd6f94dd305f805212a46c9819f421a6558841 SHA-256: dd6a827f5049e35a8ccd158da8ab1a7f56ffbac85f87bd1414f36c126df69bf6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites. These sites host further PDF files, suggesting a multi-stage attack designed to lead users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://garglob.ru/uplcv?utm_term=how+many+seasons+does+tokyo+ghoul+have+on+hulu PDF link annotation
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/17306a97c2ed48d1cd93fcf4d8f65617/godelax.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/31651541555.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/0lt8uoobv0991eul1e61fm1d7i/jabumewuwe.pdfIn PDF document text
    • https://www.avantagesapp.com/uploads/files/dazagumokovifowapedobeweg.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/86213a483d2b91fca6f2defe5573cac4/45171202499.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a99dbc6ac7---83324519442.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160dde5ccdacaf---fatipilexisox.pdfIn PDF document text
    • http://elesi.eu/fichiers/files/jedobexofipojapa.pdfIn PDF document text
    • https://stvorki.ru/files/file/29376140062.pdfIn PDF document text
    • http://bhs1966maui.com/clients/64750/File/68164249373.pdfIn PDF document text
    • http://1970fchs50thclassreunion.com/clients/1/19/19770213778af891f1b13fa25f964f50/File/94566690860.pdfIn PDF document text
    • http://rallyteamwalraven.nl/file/gazujaforixaruf.pdfIn PDF document text
    • https://havanic.com/cache/fck_files/file/tamufumanovaveputuwila.pdfIn PDF document text
    • http://akcompany.vn/uploads/userfiles/file/tijateno.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b782c837a4c---woxabeniw.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/b0d8d599644b88ed23d8ca0f897ff724/pizorurim.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/aa6826357dfc4bf7f7f8215240fdc61b/mivoveregobufezukisik.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/56f45536928b496b6c0890f66d2349d2/85852416341.pdfIn PDF document text
    • http://wadirumshootingstars.com/userfiles/file///25299963448.pdfIn PDF document text
    • https://remoteworkerclub.com/wp-content/plugins/super-forms/uploads/php/files/3ac9692d64510a128c5e1b7aff865cf0/56201009354.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16096df3b6343f---mejemafemawote.pdfIn PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/20216181555142105.pdfIn PDF document text
    • http://zonwering-nederland.nl/ckfinder/userfiles/files/41238511188.pdfIn PDF document text
    • https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/68b5370b0d5efb2e8bc5a6da68ec1a9c/68329333043.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15781 19116 bytes
SHA-256: 7b2fd424ad74a6e5f449a28cedd252e124ef523ba16b6fadaeabd498b48d8441
font_01_sfnt_off000188f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188F8 10952 bytes
SHA-256: 0c68e535329d6ed8241abf61392010aa7b5b56944e8c2084bec4912f95bfa011
font_02_sfnt_off0001a20b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A20B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.