Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ea894c80f090a0…

MALICIOUS

PDF

72.0 KB Created: 2021-02-24 00:03:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ac4dc3b6cfa90a73693f29e7fab6e6c6 SHA-1: 27b833f08ee4eaacbc899c68dfcb33b61e54cfbe SHA-256: 26ea894c80f090a01b5d6045d30287fca8dcdf0fccb516252d3356915ee6dec9
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and a specific lure related to "baby goats in pajamas pics". The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text that appears to be a lure, and the presence of external URIs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://seumenha.ru/123?utm_term=baby+goats+in+pajamas+pics PDF link annotation
    • https://gekuxufetog.weebly.com/uploads/1/3/1/3/131384115/bikujapuwaxatip_jusok_zivuxojipajope.pdfIn PDF document text
    • https://sukizasatesez.weebly.com/uploads/1/3/4/6/134686833/9b2ba20610a8f07.pdfIn PDF document text
    • https://cdn.sqhk.co/gefisodir/eihB6p6/8887439626.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448121/normal_5fca94cb514fe.pdfIn PDF document text
    • https://juvifopabolosat.weebly.com/uploads/1/3/5/3/135313118/gasufizomifet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370057/normal_600665c25426e.pdfIn PDF document text
    • https://nuwusiran.weebly.com/uploads/1/3/5/3/135321198/8512573.pdfIn PDF document text
    • https://cdn.sqhk.co/wusezofetib/gaIhg4h/gokabamoramibaw.pdfIn PDF document text
    • https://wurokilusonopos.weebly.com/uploads/1/3/5/3/135345649/10b07039a.pdfIn PDF document text
    • https://cdn.sqhk.co/wokowuvawuz/idbihgd/38944449045.pdfIn PDF document text
    • https://cdn.sqhk.co/rogapakaler/psWRkjf/adderall_generic_name_in_spanish.pdfIn PDF document text
    • http://sevosegopuro.iblogger.org/toshiba_tv_codes_for_blackweb_universal_remote.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387571/normal_60073d2e467ef.pdfIn PDF document text
    • https://cdn.sqhk.co/mewowoji/ggRBge7/3032558729.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://boxalage.epizy.com/66879469215.pdfIn PDF document text
    • http://bijalefopate.rf.gd/20419911090.pdfIn PDF document text
    • http://digimoxesimukus.rf.gd/what_is_defined_as_logical_thinking.pdfIn PDF document text
    • http://wobemiko.epizy.com/java_interview_questions_and_answers.pdfIn PDF document text
    • http://mevusajilitum.rf.gd/platform_picture_ajay_devgan_full_hd.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_off0000dc16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC16 5492 bytes
SHA-256: ff781c05cad0fa73c7d9d6993eb2b1d43089d7498eb37dc37e4da017e2a6e17e
font_01_sfnt_off0000eeca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECA 10468 bytes
SHA-256: 243e1387371118a2ce7732001efa80d9eee7eeca9f6d5182fa4122a9acd2ab0a

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