Malicious PDF — malware analysis report

Static analysis result for SHA-256 893c8a19d7704de4…

MALICIOUS

PDF

62.3 KB Created: 2020-11-12 19:49:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a030452a0ee70f73e4038f225cb810de SHA-1: 2985b340aaf68eeb8997bd07c7313ac835cbbfc3 SHA-256: 893c8a19d7704de45086a18e0a903eebee20542539289baad1c5a695001bd1ff
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 0.9994

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://trafffe.ru/123?utm_term=sacred+geometry+jewelry+box PDF link annotation
    • https://vakonawokedoze.weebly.com/uploads/1/3/4/5/134522954/ditimizoravisewolal.pdfIn PDF document text
    • https://velabusodogir.weebly.com/uploads/1/3/1/8/131858366/9dfaf12fbefae.pdfIn PDF document text
    • https://tedumuwoke.weebly.com/uploads/1/3/1/3/131397970/295a4b086e.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://uploads.strikinglycdn.com/files/32899007-74d5-485c-9e77-2e86353f0e19/dojazalokijoje.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/modded_agario_party.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e791c04-c124-4471-bff0-524ec7e994c4/lukas_graham_7_years_old_song_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b46d6638-9aff-40c4-8a87-6dcd27c6c2ef/xusebiro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d77c7bd8-dca5-4529-b05a-3d930b4bcf3b/religious_in_brazil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b260876b-9e20-482d-a299-980a28c86b33/lilefobinaxirunozez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c78a1d9-3890-45da-8ef0-154bac2945f0/natorekudijuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5acada7b-1ebc-4caa-b156-53f425076320/xosulesodi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ee62d11-26ad-4d6f-8782-54232d3e45ca/nurulewiwasizuviretovate.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_off0000ab68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB68 5296 bytes
SHA-256: e621f23591545bfa642f5f963a64f735fc02d196d05908b27a880d7d2cda27a9
font_01_sfnt_off0000bd8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD8C 9684 bytes
SHA-256: 1d6496de600d87cd77938a104ba234d5e660db3bc8d72f40abda942fb3210574
font_02_sfnt_off0000deb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB9 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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