Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb0bb2ddea794dc7…

MALICIOUS

PDF

75.0 KB Created: 2021-02-20 02:17:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 134389e7b4eca3a64b44e22ccbef3fd1 SHA-1: c8820ff95094596b2c493e9777c786d63666bd08 SHA-256: bb0bb2ddea794dc71ef417600fab801d999781eebf6280c214ca2f2bb3febff5
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://leonvi.ru/aws?utm_term=how+to+add+fuzzy+lookup+in+excel+2013 PDF link annotation
    • https://cdn.sqhk.co/besiwowegin/2lTihbP/tile_stores_near_me_open_now.pdfIn PDF document text
    • https://funifagokose.weebly.com/uploads/1/3/2/6/132681236/gulopoxowedes.pdfIn PDF document text
    • https://cdn.sqhk.co/kixepijap/gjifgdz/41201263548.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/c0hchhU/wovetuxeruxiri.pdfIn PDF document text
    • http://parexapubep.iblogger.org/47947250325.pdfIn PDF document text
    • http://tazizaj.iblogger.org/ximewowegapirufap.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/gjhiQw6/zedirepozedafopimuku.pdfIn PDF document text
    • https://cdn.sqhk.co/bupedamarib/Qihjjge/red_sun_today.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/jiigS7Y/37234410987.pdfIn PDF document text
    • https://cdn.sqhk.co/bidekidarub/6hPhcge/rujegutanu.pdfIn PDF document text
    • https://cdn.sqhk.co/divekezor/sbidggy/60452458285.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pitowurojagit.epizy.com/7354961793.pdfIn PDF document text
    • http://mowesedapi.epizy.com/adanga_maru_movie_free_in_tamil.pdfIn PDF document text
    • http://palalujopaxuv.epizy.com/kindle_paperwhite_3rd_generation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/runibewilanitegudoxapo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000e6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F9 5700 bytes
SHA-256: 42455d9593ce86b0bde020bef22b796b234473e104aeb4031b608b2fc8a0eb97
font_01_sfnt_off0000faac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAC 10740 bytes
SHA-256: 346049a1f9d80e2d05f34711b3ac9113763ba30c20b2a289215adcc0d834449a

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