Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cc1c8180d21b854…

MALICIOUS

PDF

84.9 KB Created: 2021-05-23 12:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a8b9a7482365c89c80a77a71f1469ec5 SHA-1: df588470c41be4e08337b085dc80237d777ae625 SHA-256: 6cc1c8180d21b8540155b5c6cb2768072639912caa83ca12cc9447bb9e65b117
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/strik?utm_term=construction+safety+plan+sample PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380857/normal_60112878bb321.pdfIn PDF document text
    • https://dubutabinagi.weebly.com/uploads/1/3/4/4/134441981/bejewibujexili.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377401/normal_6007453c85592.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468827/normal_603e6e48a61ce.pdfIn PDF document text
    • https://gevexewu.weebly.com/uploads/1/3/4/0/134018209/tekalipivilisaz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459481/normal_5ff171c0be351.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413002/normal_5fd6ed0d8cf23.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/voxazedisula/tajotakudobivebifawo.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/39303893209.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c775ac90-65a4-4451-9dbb-fb224bd27264/manual_de_organizacion_y_funciones_libro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce7b2866-8bf4-4d32-a4f0-c997ad6ed6bd/57635899974.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/61794373606.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/anemia_in_pregnancy_project.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/49947175782.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/what_is_allocation_resources.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/96530766517.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/brushback_pitch_informally_crossword.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ebd535c-59a7-4219-bc2b-0930c52b47a1/rigijoti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f11d173a-52b0-4548-87a5-d4581f621ac8/63378290853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83163e29-a348-475e-8dec-1d2f94360617/i_am_that_girl_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68b32475-0615-4b0e-930b-cb78d48588c8/26672370364.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E5 5168 bytes
SHA-256: 5eabe3720e40882211e62d44c86afdb13102df910ec07fcad49d44b0947b6de7
font_01_sfnt_off0001156f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1156F 10088 bytes
SHA-256: c6e2e82b2b4bb68c0a30120101b0adda1996cf4657d66eec1e8fb910c7198113
font_02_sfnt_off000137e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137E3 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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