Malicious PDF — malware analysis report

Static analysis result for SHA-256 9054b962b70f50ea…

MALICIOUS

PDF

92.1 KB Created: 2021-03-16 00:23:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: a58ac26d0ea07e03f875b081103a637c SHA-1: 43de1b941cfa00e55ce9d403474b94655adfe5c7 SHA-256: 9054b962b70f50ea248b2afd9bfa1aeb7c73e64e4c3614a808cd6982c452ab2f
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One embedded URL points to 'xezojetit.ru', which is likely part of the malicious infrastructure. No scripts were extracted, but the PDF structure and link farm behavior indicate a phishing or malware distribution attempt.

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/wix?keyword=gold+miner+se+game PDF link annotation
    • https://luboguti.weebly.com/uploads/1/3/0/7/130739177/3444377.pdfIn PDF document text
    • https://fewupebotugap.weebly.com/uploads/1/3/0/7/130739906/74e83e.pdfIn PDF document text
    • https://nokajavu.weebly.com/uploads/1/3/0/9/130969653/995dcf25cdd6442.pdfIn PDF document text
    • https://sobidoduwipiver.weebly.com/uploads/1/3/1/4/131406433/5462758.pdfIn PDF document text
    • https://gopadafuwidu.weebly.com/uploads/1/3/0/7/130740623/tokaju-fawemugurom.pdfIn PDF document text
    • https://begagezegitajaj.weebly.com/uploads/1/3/1/3/131398046/birul_jozagusonof_zegaxituxemaf_zesise.pdfIn PDF document text
    • https://lumezoti.weebly.com/uploads/1/3/4/8/134863392/barikorefopar-dowawa-nalubivikab-bipuvijezaxi.pdfIn PDF document text
    • http://gejurabek.getenjoyment.net/xatuwox.pdfIn PDF document text
    • https://vipukawolatu.weebly.com/uploads/1/3/4/4/134486161/4745475.pdfIn PDF document text
    • https://varemajog.weebly.com/uploads/1/3/4/5/134585454/kaxanilibur.pdfIn PDF document text
    • https://girawosanisab.weebly.com/uploads/1/3/0/7/130740609/7648016.pdfIn PDF document text
    • https://bejivuvepezera.weebly.com/uploads/1/3/4/4/134437422/3ed8e59ae4c.pdfIn PDF document text
    • https://tozusasulinun.weebly.com/uploads/1/3/4/8/134872335/wedabovazijito-terofug-batepop-luzibo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6c892e0d-5736-4b4a-96a3-cd490fd1fe3d.filesusr.com/ugd/1407cd_febf0937c8b74dcea584edbef52a4750.pdf?index=trueIn PDF document text
    • http://luxupuxud.myartsonline.com/38439835245.pdfIn PDF document text
    • http://jofikuv.atwebpages.com/68057015454.pdfIn PDF document text
    • https://1a2149e7-ca7f-4e7c-a584-0e483de6f3af.filesusr.com/ugd/9219f8_c7e96e1ec0a44963858e034c19cd9812.pdf?index=trueIn PDF document text
    • https://9f53eded-325d-4e02-8430-7c09bd872488.filesusr.com/ugd/e04405_c236ebc8acb34bcda6d992595f34e5b1.pdf?index=trueIn PDF document text
    • http://xirofapinowud.atwebpages.com/59860310207.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF5 5176 bytes
SHA-256: c1c03a637ed097755967ae0c77c9baeecd0969b05d79631ddf0ae7cc7ec21078
font_01_sfnt_off00013d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D75 11332 bytes
SHA-256: 28f22c79896886c2e9ede1cf74bf3a55f05747ca159891b11dca455bdfc145ef

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