Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe1ebd64539c29c…

MALICIOUS

PDF

79.4 KB Created: 2021-05-17 20:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44ac978b90a0ed5160972eae1f854c5f SHA-1: 2255083fff7370e749be01135e0b7d641e9b715a SHA-256: 4fe1ebd64539c29c6553446776efa246408ec05184fce6109258db37e5f221ed
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document exhibits characteristics of an advance-fee scam, attempting to lure the user with promises of a prize or lottery winnings. It contains numerous external links to PDF files, likely part of a link farm designed to improve search engine ranking for deceptive lures. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://jacksth.ru/strik?utm_term=burger+king+breakfast+times+ireland
    • https://degepuwenezeg.weebly.com/uploads/1/3/1/6/131607310/3488990.pdf
    • https://static.s123-cdn-static.com/uploads/4463788/normal_60042ff839849.pdf
    • https://rixukiwifezi.weebly.com/uploads/1/3/5/3/135392959/ruvututasupuko-dusunitu-xuguze.pdf
    • https://mafivuvaga.weebly.com/uploads/1/3/5/3/135323118/zivimijivi.pdf
    • https://xokaxoluxiw.weebly.com/uploads/1/3/5/9/135977396/799366.pdf
    • https://mepanomelisegil.weebly.com/uploads/1/3/4/8/134899905/fe590c892fa31.pdf
    • https://dotejapu.weebly.com/uploads/1/3/4/0/134042906/depogi.pdf
    • https://zokolukesowi.weebly.com/uploads/1/3/0/7/130776120/7948560.pdf
    • https://zisatusomet.weebly.com/uploads/1/3/4/8/134872515/famemuxamafut.pdf
    • https://static.s123-cdn-static.com/uploads/4446162/normal_60047a29ed205.pdf
    • https://cdn-cms.f-static.net/uploads/4372383/normal_60451228a1ead.pdf
    • https://nubugudapo.weebly.com/uploads/1/3/2/8/132814946/3343102.pdf
    • https://jugivukovetid.weebly.com/uploads/1/3/0/7/130739525/8828170.pdf
    • https://kasitawudak.weebly.com/uploads/1/3/1/3/131380619/diraw.pdf
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/84b4952d9771c.pdf
    • https://static.s123-cdn-static.com/uploads/4377377/normal_5ff3e4f72e53b.pdf
    • https://cdn-cms.f-static.net/uploads/4453890/normal_6052b2f252c80.pdf
    • https://gelatotagubas.weebly.com/uploads/1/3/0/8/130813077/e8e995e.pdf
    • https://wobipogipexiwom.weebly.com/uploads/1/3/1/0/131070125/morawopamixoliduga.pdf
    • https://sewajevujunu.weebly.com/uploads/1/3/2/8/132814136/beac1c1f31d8.pdf
    • https://wusukinepazewa.weebly.com/uploads/1/3/4/3/134372908/99a8a1af094a8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pisedij/chandramukhi_video_songs_720p.pdf
    • https://s3.amazonaws.com/safenalavojuwu/15938526458.pdf
    • https://s3.amazonaws.com/boxalewijim/kijekes.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e987.bin
82d06db250d01aef55fac2584ed6305cdb1b270bd05794e81e48e38e1bf3478a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE987 3168 bytes
font_01_sfnt_off0000f4dd.bin
fc1c0ff5f0f5a787e799d2065bbce5a82588b85225e4c46549867bd49378a25a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4DD 5480 bytes
font_02_sfnt_off00010773.bin
63bc543c7f8dfd1230d8b89ed17d63a23911673b7f47df5186c1ef8b95983189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10773 11700 bytes

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