Malicious PDF — malware analysis report

Static analysis result for SHA-256 3baec0f2b69e5e74…

MALICIOUS

PDF

75.7 KB Created: 2021-04-25 20:44:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6e2b82621bbcbe7422793dff6732f9e5 SHA-1: 33777acd6ee55c82035215434979fe22e6f8f3f9 SHA-256: 3baec0f2b69e5e7498175723ad9e76efc02612bc71f900abf49f30ff446ff367
124 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users. The document body, though heavily obfuscated, contains text related to search terms, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9095

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 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://druttle.ru/strik?utm_term=best+old+school+hip+hop+bands PDF link annotation
    • http://mujododaziwato.scienceontheweb.net/advantage_and_disadvantage_of_internet.pdfIn PDF document text
    • http://lisuzigerob.mygamesonline.org/15691072849.pdfIn PDF document text
    • https://dusitibepilezu.weebly.com/uploads/1/3/1/4/131437978/dasabiporoz_xojiketitu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413126/normal_600242215e631.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5fd23642cadbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450259/normal_600ebe77c8260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424040/normal_6017a878a29a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496014/normal_60354ef40e899.pdfIn PDF document text
    • http://faripofijukevom.mywebcommunity.org/domilagavogororukora.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416653/normal_606c6bbb52cf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382771/normal_5fc9d78d91053.pdfIn PDF document text
    • https://girawosanisab.weebly.com/uploads/1/3/0/7/130740609/fa39a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ziwemasux.myartsonline.com/rezulugajinukofaverewe.pdfIn PDF document text
    • http://tosefiwaniw.rf.gd/historical_thinking_and_other_unnatural_acts.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/91761964541.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/what_transmission_does_husqvarna_use.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/electroscope_lab_answer_key.pdfIn PDF document text
    • http://novoniranalisa.epizy.com/donobuj.pdfIn PDF document text
    • http://widamifikifewex.epizy.com/64384892353.pdfIn PDF document text
    • http://bexiponezewan.rf.gd/ansible_playbook_examples.pdfIn PDF document text
    • http://nixetatop.epizy.com/bosquejos_para_sermones_biblicos.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF1 5256 bytes
SHA-256: 928876147246373bdeaa9cc3d26e4fe7ae1afa4e82cee0e438bf44399e1510c9
font_01_sfnt_off00010ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EC3 11132 bytes
SHA-256: 8add76ca004748fc05da033255d455cfa5527e4551751965993f2458d5ea372f

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