Malicious PDF — malware analysis report

Static analysis result for SHA-256 5440e5bd252f720b…

MALICIOUS

PDF

52.6 KB Created: 2021-04-02 16:46:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 273ad2f7ab18d4cf92db7d957b44c0c5 SHA-1: ec16d31645e0d641ce8ee143e95575abae151d7b SHA-256: 5440e5bd252f720b87fa791853c22bad2b37bdef52076bd6426b76fb9245f552
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many of which are hosted on disposable domains, indicating a link farm or phishing attempt. The presence of the URL 'https://zajinet.ru/strik?utm_term=ranger+rci+2950+cd+mods' suggests a lure related to specific product modifications. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest malicious intent, likely to redirect users to malicious websites for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7510

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://zajinet.ru/strik?utm_term=ranger+rci+2950+cd+mods PDF link annotation
    • http://pixell.store/weber_electric_bbq_home_depot3ss0v.pdfIn PDF document text
    • http://cosmostil.top/weber_stainless_steel_grates_rustingtkpw2.pdfIn PDF document text
    • http://duxuliba.22web.org/aprendizaje_basado_en_proyectos._infantil_primaria_y_secundaria.pdfIn PDF document text
    • http://pikowomaxuden.iblogger.org/85900590234.pdfIn PDF document text
    • http://nikomodemudajo.iblogger.org/roland_fantom_x6_61_key_keyboard_workstation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c61593d-a402-4bf0-ad48-7a7e0445d129/verotitanokoxegex.pdfIn PDF document text
    • https://c2093f15-f4fb-4bda-9582-db5404103fa6.filesusr.com/ugd/b28561_03ec5eea927f4c819edd8addf94a1e4d.pdf?index=trueIn PDF document text
    • https://9d03b195-5c34-4993-8a23-519dd2bddccd.filesusr.com/ugd/9ac058_69ff8560187d4393bbdc56e89a57ebb3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5ebcd35-1add-4f70-ade3-d0097fad1fc3/zigilivegogajalikepemijur.pdfIn PDF document text
    • https://728bf1be-24e3-4891-ba98-fedceca1a503.filesusr.com/ugd/3268c8_39a0e615acae4ac5b9645cdfc8d40192.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a10c5d8-f219-4a3b-b250-032a4112b508/how_to_take_splat_hair_dye_out.pdfIn PDF document text
    • https://3437305d-a3f4-4f94-9a63-846dd410f5be.filesusr.com/ugd/ffe76b_1cd2312faa1d4b87a0dbdad291427b91.pdf?index=trueIn PDF document text
    • https://832c8a8d-f05d-46e3-9166-97d9de82ace4.filesusr.com/ugd/432509_daca83ba03fa4956972a168a6c8a9331.pdf?index=trueIn PDF document text
    • http://pekesapawej.epizy.com/sekagukosajedojevusowo.pdfIn PDF document text
    • https://6dca1d0c-b102-4aa4-a312-d013f97c39dd.filesusr.com/ugd/fb87fb_ffd856d4b2a84761a7134e1bf4d214bc.pdf?index=trueIn PDF document text
    • http://japivolenalu.epizy.com/wozodatapenivewaw.pdfIn PDF document text
    • https://5efcf519-4c71-4be9-a00f-e1d47ba804c5.filesusr.com/ugd/ebcc4b_b1ca8a1d51324b18a168627b9cef7a31.pdf?index=trueIn PDF document text
    • https://8a89c5bc-485b-4808-980c-66c60e8d9908.filesusr.com/ugd/834936_b2e22140079f43c4a5711a71f6c0cc7d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7140fab5-ad8e-4a8e-84e9-89d706617760/safety_razor_vs_straight_razor_reddit.pdfIn PDF document text

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