Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed921ff2eb9e816…

MALICIOUS

PDF

68.2 KB Created: 2020-12-07 10:56:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9ca00ced0e8db1320ff14c318d7b7d11 SHA-1: d8a075182d4a89583f92ee41a7234ac891016d17 SHA-256: 5ed921ff2eb9e816da949832e91831510371a91bfd1c16a4cb6941fa195a4aac
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 0.9997

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=party+politics+in+america+hershey+pdf PDF link annotation
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/majimemo_sazuzeronob_malotupofe_somije.pdfIn PDF document text
    • https://rurasudi.weebly.com/uploads/1/3/4/4/134485231/3418265.pdfIn PDF document text
    • https://besogedawifajop.weebly.com/uploads/1/3/4/2/134234635/7697624.pdfIn PDF document text
    • https://fonamajubeb.weebly.com/uploads/1/3/4/4/134474676/6933175.pdfIn PDF document text
    • https://sajofagexureleb.weebly.com/uploads/1/3/4/6/134652103/8110938.pdfIn PDF document text
    • https://dofafurubes.weebly.com/uploads/1/3/4/7/134762343/gunawobusosob_luxoforubewewix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/50863520-0dc6-40fa-86d3-6f82e9d7e56f/element_3d_primitives_pack.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a60b1c8c7413143d24fc/t/5fcdac4433187724c40ede6e/1607314505674/play_arcade_games_online_emulator.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc687f5df132613bbe462d8/t/5fcb310f21c0486e9190d616/1607151889422/no_color_color_by_number_mod_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d7c89955c744b53b4369/t/5fc13c1dfa04221c714cbc7c/1606499357908/house_of_sparky_basketball.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf6d94e98326c02d5acca/1606285021117/78872080339.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_off0000cd03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD03 5496 bytes
SHA-256: 4375806948ffd4e7c3f8a88f195b0632b3056be1d34d5033acfdfc7278c62f7e
font_01_sfnt_off0000df92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF92 10832 bytes
SHA-256: 2bc9a345e4647c796e117c099871cb179bb98bc1a29a07f9924f8bdfc8e398d7

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