Malicious PDF — malware analysis report

Static analysis result for SHA-256 6582bc2ae5c806d6…

MALICIOUS

PDF

69.5 KB Created: 2021-03-10 08:58:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 39fec8d5704a20870ac1fe3ae2ea2f99 SHA-1: 098916cfe2db6c9ac75abd073e6e79e2c15390e6 SHA-256: 6582bc2ae5c806d6544d5fa2ff573f878e07ca9698b18a299db2f73ddbd75882
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 0.9599

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/award?keyword=types+of+advertising+media+pdf+download PDF link annotation
    • http://trackengine.host/81426161028ax5qt.pdfIn PDF document text
    • http://fonagifegelu.iblogger.org/vowozijiribo.pdfIn PDF document text
    • http://mikrotikwizard.com/cs_go_case_simulator_apkxeufe.pdfIn PDF document text
    • http://neximegimukik.iblogger.org/21937382331.pdfIn PDF document text
    • http://getyourcredit.info/which_verse_talks_about_divorceg09oz.pdfIn PDF document text
    • http://fbdirect.site/the_spook_who_sat_by_the_door_streamingb8i92.pdfIn PDF document text
    • http://muzoc.xyz/best_paid_night_shift_jobs5u60l.pdfIn PDF document text
    • http://ketotreno.buzz/27315232369apo9s.pdfIn PDF document text
    • http://hardcreditcheck.info/90010416982nj586.pdfIn PDF document text
    • https://93dbb2ad-f1e8-4c6c-adfd-2ef134399473.filesusr.com/ugd/df4650_bf4a1e57249c46f183e807230e079005.pdf?index=trueIn PDF document text
    • http://lofekelatek.epizy.com/is_a_mini_chopper_the_same_as_a_food_processor.pdfIn PDF document text
    • https://1ec9b6e7-17eb-4e1e-a994-ba5ce4cbdb7c.filesusr.com/ugd/d4a9d6_7912bb33959d482bbdb8506919d92e83.pdf?index=trueIn PDF document text
    • https://b5f169ef-6bcf-4d19-a24b-32bdc9dd7a5f.filesusr.com/ugd/2e79a6_f62ca9b9bfdf4857af41dcd9381754b6.pdf?index=trueIn PDF document text
    • http://rekekolulopar.rf.gd/the_communist_manifesto_ao3.pdfIn PDF document text
    • https://09972071-4174-499b-90b1-de3619f59f53.filesusr.com/ugd/d1c05f_e4bd7a912c5440ae945e9323a24418b1.pdf?index=trueIn PDF document text
    • https://4590046d-f0a9-4171-b8a0-56ff8c1fe63c.filesusr.com/ugd/0bfb20_7d5e3f287a23435a955fea02d242e2cb.pdf?index=trueIn PDF document text
    • https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_fe06fc764a294687a678f2b32b3caa3f.pdf?index=trueIn PDF document text
    • https://5c839259-519f-4cee-a1a2-6639d654070b.filesusr.com/ugd/140efa_2a276b58f9fb44d580cd923fc3950529.pdf?index=trueIn PDF document text
    • http://gaxufaxurawago.epizy.com/adp_payroll_information.pdfIn PDF document text
    • https://2b81f3f0-3f46-42ff-87a7-5865dd96cd3c.filesusr.com/ugd/fb41f9_002e0d0ed7ea4f388c0908aec44a499f.pdf?index=trueIn PDF document text

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