Malicious PDF — malware analysis report

Static analysis result for SHA-256 325165ff00add947…

MALICIOUS

PDF

64.5 KB Created: 2020-12-30 12:47:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0f503bc294e4c3f1e7965428eb98e9c8 SHA-1: 6a07b557fb5f9e85f6dc63ccad7cac54a0e903a8 SHA-256: 325165ff00add947ab8e3b67d9888e56eebf1b293d747ee629ac66dd5744c587
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://trafffe.ru/wb?keyword=ben%20stokes%20wallpaper%20download PDF link annotation
    • https://cdn.sqhk.co/pevelefotuve/B6ejeXT/pakejikusa.pdfIn PDF document text
    • https://pepuzategazeg.weebly.com/uploads/1/3/1/4/131453576/13228d.pdfIn PDF document text
    • https://cdn.sqhk.co/rosomugimo/ajfgjgj/dakiwuri.pdfIn PDF document text
    • https://joluduloj.weebly.com/uploads/1/3/4/2/134266967/fodifiwipodu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446790/normal_5fa7abf0c5154.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/xopugup/23415299161.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/45105063133.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/24760169025.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/19738095112.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/gisufodamuvulede.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/soripoma.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/86283527272.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d20e9a8-5cca-4ea0-8a1c-59955e51b71a/jajomewanitoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/water_release_schedule_for_davis_dam.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/wedemopewiwelinarer.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_off0000bda1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDA1 5160 bytes
SHA-256: 6f4bdbd4a647b26fce6308fe5bc4d0f062219e750d4b510c13a4321164d0cff9
font_01_sfnt_off0000cf53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF53 11472 bytes
SHA-256: 395c8be992a5b8dd09b19ba66ea441d8afc569ed333e5ef98dbdea901154b4c6

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