Malicious PDF — malware analysis report

Static analysis result for SHA-256 215379cdf151ff1e…

MALICIOUS

PDF

61.3 KB Created: 2021-03-20 23:21:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 16bad2ab6d5977184b0eb638056ec2b0 SHA-1: 5f26be148600e924ad309b94428dbbd3be56c414 SHA-256: 215379cdf151ff1e89cd5b9d9c568c0f478a9f493ac8b7387fd27ee82fe1e759
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.7864

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://dugedepap.ru/award?keyword=libros+para+aprender+espa%25C3%25B1ol+a1+pdf PDF link annotation
    • https://tonusawojojumo.weebly.com/uploads/1/3/1/3/131384735/6688314.pdfIn PDF document text
    • https://jerepukiw.weebly.com/uploads/1/3/2/6/132681878/3981731.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/8IgfDMh/xekamopimimanenoz.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwadezab/cidongj/acrylic_nails_coffin_shape_long.pdfIn PDF document text
    • https://cdn.sqhk.co/buvoxinas/UI7Agfe/96225937653.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/fibNgua/business_accounting_services_dunwoody.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobuwaxegu/c2YieCx/chipotle_mexican_grill_pico_de_gallo_recipe.pdfIn PDF document text
    • https://cdn.sqhk.co/livixugakuf/FigKifI/sad_stories_to_tell_your_crush.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/fMDigjd/pokemon_sword_hitmonlee_or_hitmonchan.pdfIn PDF document text
    • https://cdn.sqhk.co/migixurej/yZjeeDp/sms_tamil_movie_ringtones_download.pdfIn PDF document text
    • https://nategenuniko.weebly.com/uploads/1/3/4/7/134749174/safametapuge_tagena_subudodut_fejob.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/mazawosetis.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/ja9Btgj/24708329737.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujonad/pHhjbzx/police_cop_simulator_gang_war_online.pdfIn PDF document text
    • https://pexafibilo.weebly.com/uploads/1/3/4/4/134484824/remivugeju_loxifonajo_dubezuz_xolan.pdfIn PDF document text
    • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_077297ec7f6e415a913a1f32ead28e65.pdf?index=trueIn PDF document text
    • https://af1bea64-f5cd-41c2-a7c1-97f21c1aa057.filesusr.com/ugd/592671_2236a8b9f3f145bbadcb4d90bf5a5281.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/cvs_specialty_pharmacy_prolia_form.pdfIn PDF document text
    • https://0eb00d84-361a-45dc-b346-1af5c8eb785c.filesusr.com/ugd/d79848_03a449a2a6a9480c90f306ac948e8d05.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/binson_echorec_baby_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/89010519977.pdfIn PDF document text
    • https://s3.amazonaws.com/natewared/troy-bilt_2800_psi_pressure_washer_parts_diagram.pdfIn PDF document text
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