Malicious PDF — malware analysis report

Static analysis result for SHA-256 35622745f878ce50…

MALICIOUS

PDF

78.0 KB Created: 2021-04-30 15:58:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c649c52c65d8b65fd94f7bde7b9a138f SHA-1: 747d0ac8de07d01d9989c5fd3f53a9fc5949e381 SHA-256: 35622745f878ce507e3141c3aee5c20c189b961b8ff5b18fefe8814465a4cc79
156 Risk Score

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 0.9991

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://soxebez.ru/strik?utm_term=sony+xplod+800+watt+amp+price PDF link annotation
    • https://cdn.sqhk.co/fojevimexu/ienPhc5/55749638353.pdfIn PDF document text
    • http://alex-travel.moscow/sabado_domingo_pulgahq4jn.pdfIn PDF document text
    • https://xuniruki.weebly.com/uploads/1/3/0/7/130739043/xaratej_pitesisalu_rubuz_wavazutata.pdfIn PDF document text
    • https://cdn.sqhk.co/wizokawoxo/auyvigM/sword_art_online_game_app_for_android.pdfIn PDF document text
    • http://terakusinuw.mypressonline.com/1240679038.pdfIn PDF document text
    • http://letabumo.getenjoyment.net/94302136676.pdfIn PDF document text
    • http://zenaxudoriw.mypressonline.com/angielski_czasy_w_piguce.pdfIn PDF document text
    • https://cdn.sqhk.co/ranuvore/gemdIhd/fold_up_bikes_for_adults.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/Mhcgfge/zigenage.pdfIn PDF document text
    • http://fridgeservice.ru/ruins_of_myth_drannor8huhp.pdfIn PDF document text
    • http://bitalotava.scienceontheweb.net/7838258985.pdfIn PDF document text
    • https://bobiputab.weebly.com/uploads/1/3/2/8/132814039/fe460178a1e141.pdfIn PDF document text
    • https://vimedijo.weebly.com/uploads/1/3/1/6/131606629/3659e6.pdfIn PDF document text
    • http://choosemadam.site/94836629766emsa0.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/wanasuvedigo/bastar_university_jagdalpur_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/zewiwipe.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/28356945474.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/xukesuzesumima.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/wureberevenuwuximur.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/motorola_talkabout_manual_t5720.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/carnitina_bioquimica.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/87538870366.pdfIn PDF document text
    • http://dokudaruriwiv.atwebpages.com/86173151795.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/aarambam_songs_starmusiq_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_off0000ed2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2C 5744 bytes
SHA-256: c047ab4a57d802c6f812037fd39eff5096286601525e9b3987a6288ff815d51b
font_01_sfnt_off000100c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C6 12360 bytes
SHA-256: de51477256633aa9af0745eec64f3abc10b63fa5c1b1409a5e2560101ed09785

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