Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ace6351df1b1c0c…

MALICIOUS

PDF

105.5 KB Created: 2021-03-07 09:46:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 19ebf29cf70c8025557c47f4c0023afe SHA-1: 11c5ef84fd969d60cf1a6fd930f3af00c81a7775 SHA-256: 3ace6351df1b1c0c49d5d4abb16f21dc1176a142cad291b43df2bed4a41da413
184 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to disposable domains, indicating a link farm designed to manipulate search engine rankings or redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or redirection tool.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6365

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://golowaki.ru/award?keyword=what+is+agile+development+team PDF link annotation
    • https://cdn.sqhk.co/gusoguribus/jhBjehb/troubleshooting_beats_solo_wireless_headphones.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwumixe/djdgegd/go_go_pogo_cat_fruit.pdfIn PDF document text
    • https://cdn.sqhk.co/pasudajuwesa/iatigVd/xozusejivitimewu.pdfIn PDF document text
    • https://cdn.sqhk.co/bodegife/abhbFge/270366371.pdfIn PDF document text
    • http://tolewigep.22web.org/what_does_the_term_central_theme_mean.pdfIn PDF document text
    • http://tesevamomavuruf.22web.org/xeropetivofuxafowafi.pdfIn PDF document text
    • https://cdn.sqhk.co/nadovexum/jehbxia/vitawikarazemu.pdfIn PDF document text
    • http://nilofebep.iblogger.org/public_health_act_1848.pdfIn PDF document text
    • http://fexekozupupuge.22web.org/grass_cutting_contract_template.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/hbhdqLF/96838529882.pdfIn PDF document text
    • https://cdn.sqhk.co/milatepoz/ZlyzAxR/35713712437.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/pepesuwisofupavufazijovar.pdfIn PDF document text
    • https://3ecb585b-79b8-4502-8567-d9a17299c5c1.filesusr.com/ugd/4b874d_d7f7cd4d60a54b6c82a30e54403b6f17.pdf?index=trueIn PDF document text
    • http://kinapemib.rf.gd/dedikasewaxunokavelujaja.pdfIn PDF document text
    • http://mozabufapimil.epizy.com/vupobemikif.pdfIn PDF document text
    • https://6593eeda-10fe-4128-810f-cbbc79f0a4f8.filesusr.com/ugd/c0a4bf_03f5983fb5654b8bb7675484534a57b2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/44263830354.pdfIn PDF document text
    • https://8eeb1f0a-0cdd-4c66-98a4-83777b49fb54.filesusr.com/ugd/64f9d2_a688bc59662746e5900275268652a601.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/math_textbook_answers_grade_10.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/back_formation_meaning_in_turkish.pdfIn PDF document text
    • http://lafeseg.rf.gd/guzuduveku.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/30099536312.pdfIn PDF document text
    • https://6525eaf8-9a42-4119-9fb4-c3d475b3b78e.filesusr.com/ugd/80bfa9_b3b8382c18fe4c099010bb1ebd005203.pdf?index=trueIn PDF document text
    • https://def26600-86c9-4442-a738-094ddf2992d1.filesusr.com/ugd/eb5a6a_808cc6b7cd4a4b10b7c2a3057cf41d7e.pdf?index=trueIn PDF document text
    • http://wejelinemadagep.rf.gd/tax_calculation_sheet_for_ay_2020-_21.pdfIn PDF document text
    • http://dadewom.epizy.com/16432801955.pdfIn PDF document text

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