Malicious PDF — malware analysis report

Static analysis result for SHA-256 949fa357cdeda6e9…

MALICIOUS

PDF

67.6 KB Created: 2021-02-06 08:18:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 411603c7717e7603f4869f986ecc2244 SHA-1: c6eb11d3b003400de5cbac96549c6543420b4cfd SHA-256: 949fa357cdeda6e9ee906789d9796686e1ac8204be762e3e54318d89a3fd8a3b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document is designed to host a large number of external links, likely for SEO poisoning or to distribute further malware. While no scripts were extracted, the presence of numerous embedded URLs points towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9705

Heuristics 4

  • 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.
  • 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://seumenha.ru/aws?utm_term=business+trip+itinerary+planner+template PDF link annotation
    • http://latuha.com/activador_office_2016_professional_pluse4ceq.pdfIn PDF document text
    • http://believes.space/call_simulator_slender_manhmgsw.pdfIn PDF document text
    • http://unlockdeals.shop/thermo_scientific_elisa_technical_guide_and_protocolsie23l.pdfIn PDF document text
    • https://tebeneka.weebly.com/uploads/1/3/0/8/130874559/7f3c8b14df4bdf.pdfIn PDF document text
    • https://cdn.sqhk.co/libuzewis/haggfFu/wrestling_revolution_world_fighting_championship_mod_apk.pdfIn PDF document text
    • https://jabekidedur.weebly.com/uploads/1/3/1/6/131636775/razolemajada-gitumuzedozofel-fuwapereb-mijifupik.pdfIn PDF document text
    • https://cdn.sqhk.co/digubamot/id3pMjf/jirugodusasupizor.pdfIn PDF document text
    • https://novomuzedideb.weebly.com/uploads/1/3/1/4/131406537/295efe6659512f.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/nuxepiduded/1974142719.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/benson_idahosa_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/suledikejalipu.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/be_safe_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/95818484534.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/pillars_of_eternity_damage_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/jezupozut.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f61f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61F 5116 bytes
SHA-256: 38e23807e1ee00a76d87f450f71738839204fed7a99f310284ab5103a77d38bc

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