Malicious PDF — malware analysis report

Static analysis result for SHA-256 e27e69a639e5565a…

MALICIOUS

PDF

76.8 KB Created: 2021-05-18 04:15:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: debde8fb1118815705444b68f8d0efee SHA-1: 705fa4086e02294a9000e7c62db92403e590eef6 SHA-256: e27e69a639e5565a129070acd687c9aeb232a2ecaca79fd2b610c948397e9c80
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO spam or to direct users to phishing sites. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior. While no scripts were extracted, the presence of numerous external URLs and the ML classification strongly suggest a malicious intent to redirect users. The document body contains text related to watching a movie online, which serves as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • 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=bahubali+3+full+movie+in+hindi+hd+1080p+watch+online PDF link annotation
    • https://vufoduvetuf.weebly.com/uploads/1/3/5/3/135302170/sinafe_gidubadojekog.pdfIn PDF document text
    • https://seritixatot.weebly.com/uploads/1/3/1/0/131070849/9547724.pdfIn PDF document text
    • https://bobejezesolaz.weebly.com/uploads/1/3/4/6/134622741/tolirupawibopoloz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461497/normal_606c9ac679949.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451355/normal_603c5506c869f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368227/normal_60516f5e9ac43.pdfIn PDF document text
    • https://manasuma.weebly.com/uploads/1/3/0/8/130873954/dufaritupowub.pdfIn PDF document text
    • https://kulufitobapesad.weebly.com/uploads/1/3/4/4/134443603/322fa01d.pdfIn PDF document text
    • http://mugizaxipeta.22web.org/gedavojusovonax.pdfIn PDF document text
    • https://gosibipidumoduj.weebly.com/uploads/1/3/4/3/134318513/giwewizatiwigafal.pdfIn PDF document text
    • https://fimosezit.weebly.com/uploads/1/3/0/7/130775491/gogak-fapewuxexivow-jodixen-nowokig.pdfIn PDF document text
    • https://zomurudol.weebly.com/uploads/1/3/4/4/134492975/d8d50182f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451027/normal_6036be523d769.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xubibufopude.epizy.com/94817859868.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/liseza.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/96632974082.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/78873941405.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/faruma.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/arch_linux_beginners_guide.pdfIn PDF document text
    • http://daxepusiz.rf.gd/64366956349.pdfIn PDF document text
    • http://xilekur.epizy.com/38932448461.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/defending_jacob_episodes.pdfIn PDF document text
    • http://kudogal.rf.gd/outlook_web_app.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/chillara_kottu_chittemma_audio_songs.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_off0000ec83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC83 6012 bytes
SHA-256: 45c7c49821e06b850835660584246f383ffb72debd3109da707a1343816eabd9
font_01_sfnt_off000100fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100FB 10612 bytes
SHA-256: 01525f5b1037d71e9b5aecae26c9f1311b1e476e6a735c10f9ba1b4db124b357

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