Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e70f7131b09720e…

MALICIOUS

PDF

73.9 KB Created: 2021-06-19 12:38:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2830e0d5ab47076eea05fee32fb3a50a SHA-1: 034c5137476477aafb9f5f33b092009c1dbe6784 SHA-256: 6e70f7131b09720ed072ae88a431709e48c84c35d80a7aaf382ec4f6933f050e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document functions as a link farm, directing users to various compromised websites under the guise of offering 'dj song download malayalam'. The numerous external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature, likely serving as a lure for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://catamma.ru/uplcv?utm_term=dj+song+download+malayalam PDF link annotation
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/7abdcf9e588c6440fac7a16b4804e006/revojalikixoxidu.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/ce8250ef9ab2fefcd5f847c955a3da52/jopalevapo.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d4f86270df---xejonut.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/1f1b6198bc6d7390123769ac14f66b84/tavivebuxadoxukanajiles.pdfIn PDF document text
    • https://office-agglo-larochelle.fr/userfiles/file/8928030554.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3cc82afbfd---resuduru.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160aa455013aa4---gibawogevoge.pdfIn PDF document text
    • https://tlproduct.com/userfiles/file/47337378015.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/o5i0vedvboa3v9cb8jf29jb120/14954432688.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f58d080bbe---binupilamojukeke.pdfIn PDF document text
    • http://www.ecvbrass.ch/user/web/file/lotitiro.pdfIn PDF document text
    • http://jirehenl.com/userfiles/file/062157192584.pdfIn PDF document text
    • http://bindashnews.com/userfiles/file/refiwituw.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff876d0253---70793545190.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE436 5316 bytes
SHA-256: 3f851bcd8cd48081db8a2da445ffddbfc10cc952d26529188f8f865738d62d75
font_01_sfnt_off0000f65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF65A 10740 bytes
SHA-256: 047cf0556d4e20922acf25aabd2c3a39e31326aef52fa9e658c500531b2b2ccd

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