Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2a087e8a52b294…

MALICIOUS

PDF

87.7 KB Created: 2021-07-06 14:29:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: eecf7425c04d7b058c806cf71201cb35 SHA-1: bb448d16d713a9f9051bad08b0cdfb6e56a8e4db SHA-256: 6e2a087e8a52b294eaca622762119e6678b014782b9441021944ceaf16a99996
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to host malicious files. The presence of a 'download button' lure further supports the phishing or malware distribution intent. No scripts were extracted, but the overall structure indicates a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://hglobaltourb2c.com/FileData/ckfinder/files/20210617_6B1ED9906248341B.pdf In PDF document text
    • https://roofmed.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b0b84818c6b---vusisosuxovomu.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b0953e7379b---61977541152.pdfIn PDF document text
    • http://vishwkarmaenterprises.com/webroot/img/userfiles/files/82273813003.pdfIn PDF document text
    • http://theonejsc.com/userfiles/file/55284839777.pdfIn PDF document text
    • https://grancom.by/upload/docs/revujunimerenazizasuk.pdfIn PDF document text
    • https://an-professional.ru/img/files/file/vosufovuxagokene.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/92009942796.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/ta4lmq06pil1llcpdse7fvo5uh/77920887270.pdfIn PDF document text
    • https://rm-parketi.si/uploads/60836572406.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/m66b5528e6a2hhr3slb6kvo764/53166451449.pdfIn PDF document text
    • http://rgn2u.com/userfiles/files/32931939800.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16075855c1490e---tefafifukijepogudarokim.pdfIn PDF document text
    • http://mikailang.net/userfiles/file/20210506200751_596160465.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/ec3ba6afd12008bb69daaec66230f0ef/dimawanebazepixedisa.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608c4e66890ea---jaretefes.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607788657316f---xozejitixafajuv.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c68133491e9---zusufizujeledujiv.pdfIn PDF document text
    • http://mywayrtk.info/userfiles/file/mamajotixuxonuvupenasaxuz.pdfIn PDF document text
    • http://sammyuriasproperties.com/userfiles/files/45047154890.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/26b70f7c27b7b641908f819bd309bcaa/45061648940.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/4911bf34d2ef3e365381732373f35d94/49180832568.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=free+hand+lettering+procreate+brushesPDF link annotation
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B51 11008 bytes
SHA-256: 6f8cf51198951eef36d3d525afd7229c08e7a92c11ddeda5fcc86af2f7502f52
font_02_sfnt_off00012450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12450 16964 bytes
SHA-256: 8d39af059d063e1d917c5c8e46a547ed7c96f25bf682799e679a906dc649ab4d

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