Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba3ac7235b0630f…

MALICIOUS

PDF

75.1 KB Created: 2020-11-22 18:40:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e9bad981a29f7c4c04ab468abb24619a SHA-1: de7b137b64d89494abb10d7592278879cfcbb024 SHA-256: 6ba3ac7235b0630fa667b33b12f888e95e1c06a5853533b6d62745a4eb1f5940
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 0.9998

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 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://trafffi.ru/123?utm_term=synonyms+for+approachable+personality PDF link annotation
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/pipepotafepefe.pdfIn PDF document text
    • https://vowufesoval.weebly.com/uploads/1/3/4/8/134885018/xerepox_miwotiwal_pusufilumegupiw_ralegirube.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/totenowawuni.pdfIn PDF document text
    • https://ruzejeparofilag.weebly.com/uploads/1/3/4/5/134582671/xikoni-gotinu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425912/normal_5fba2721afb8f.pdfIn PDF document text
    • https://welarozukakiwa.weebly.com/uploads/1/3/4/4/134497755/niduputes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472186/normal_5fba7d4b4f469.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/sixus.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/66241983207.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/silena_beauregard_dying.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/only_hearts_club_pets.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/pirunizorezijaguwu.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/41750468450.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/pandemonium_free.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE812 5600 bytes
SHA-256: ed4d6075d3d4697198961ea1b01262e79f8c99274be120ca043a202c38854f98
font_01_sfnt_off0000fafa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFA 10952 bytes
SHA-256: 3301d95076c58c87604e4cb6e6353eeb13f80ac4117ca151e2ff8777a060f2f5

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