Malicious PDF — malware analysis report

Static analysis result for SHA-256 7332fdd021f0c9a8…

MALICIOUS

PDF

73.4 KB Created: 2020-12-02 02:30:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 0c92cf7610d44423b6aeef104c341d2a SHA-1: 1ef7c9261fa14360d6c646e52d4ca3689268d7fd SHA-256: 7332fdd021f0c9a8fc5d69eb2516469f36c9362216b9cbc166a9c4deefa698d2
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of the primary URLs, 'https://trafftec.ru/123?utm_term=closing+the+gender+gap+oecd', is directly embedded. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution through these links. No scripts were extracted, but the structure suggests a malicious document intended to redirect users.

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://trafftec.ru/123?utm_term=closing+the+gender+gap+oecd PDF link annotation
    • https://xigijoxupawise.weebly.com/uploads/1/3/3/9/133999412/5d864b9d3.pdfIn PDF document text
    • https://pujosudenavi.weebly.com/uploads/1/3/4/5/134508056/8930101.pdfIn PDF document text
    • https://metumarexidema.weebly.com/uploads/1/3/4/5/134591821/b5c59f49af8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417321/normal_5fadfc7808da7.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/jinabisura/biology_investigatory_project_on_cancer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4fb53df132613bbd7c09d/t/5fc6209a145a8629dc82f52b/1606819994909/cubicfun_3d_puzzles_harry_potter_hogwarts.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/btd_battles_mod_apk_unlimited_medallions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f769ec917750a3d83c85/t/5fc49a324f9837572071fef6/1606720052754/volume_of_pyramids_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/wavipotimavutulag.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/60515411735.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/adobe_premiere_tutorial_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1796fdf132613bbc1d0b8/t/5fc284df145a8629dc0246d5/1606583519904/wizilunusaguxuleg.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c01b2e537a05ef2a3bf4/t/5fc6ccd12ac13f1ee9a6b410/1606864086349/5e_dueling_fighting_style_versatile.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/carrom_pool_mod_version_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/norwegian_gem_ship_deck_plans.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD638 2864 bytes
SHA-256: 1e45634457d00ffd260f50f45b570b897a08ba439f7acab4ec245255aa5f983d
font_01_sfnt_off0000e069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE069 5240 bytes
SHA-256: 1db362dbe55d21f8a933c0229529e3017db1e37491182e6cd8228797c2dfffaf
font_02_sfnt_off0000f22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22C 10824 bytes
SHA-256: caa03cb734d7ff1c0bb4ed1aed2680202133e82b7371a8512e838fb55d018281

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