Malicious PDF — malware analysis report

Static analysis result for SHA-256 56926e6e0d872e35…

MALICIOUS

PDF

76.3 KB Created: 2021-02-25 16:49:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e7b1290882572804e97e7eb73347e4ae SHA-1: d9ef23b7574bfa70c5d3c80afff096ccb8f514d1 SHA-256: 56926e6e0d872e355e624f02473e07bf9829986ea132247a83aab3ea96558c5c
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to potentially malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the ML classifier output strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest an attempt to lead users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9462

Heuristics 4

  • 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 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/award?keyword=molecular+biology+and+evolution+of+cancer+from+discovery+to+action PDF link annotation
    • http://tipofeliluget.medianewsonline.com/how_to_sync_jawbone_speaker_up_to_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/xeloxilava/KosGIjc/zuwugezutiraxezuwemob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471253/normal_5fe89d767bd28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462037/normal_6030176dde1d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370072/normal_5fc94b29a3fba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402949/normal_60301df975312.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425933/normal_602922329b5ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483587/normal_5fe07e8ec214e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489853/normal_5fd7915da87bf.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/2045769052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480187/normal_601fdcc10b598.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_60102b4b232e4.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/lorifumofelu/customer_service_job_interview_questions_answers.pdfIn PDF document text
    • http://bitines.myartsonline.com/how_do_i_connect_my_behringer_x32_mixer_to_my_computer.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/encyclopedia_judaica_vol_2.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/37750416027.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47A 5648 bytes
SHA-256: c74f58162369dc97e84a775c41f76f81f3d5072d9f9d4c8f756815f02f5e9d3e
font_01_sfnt_off000107b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B1 2224 bytes
SHA-256: bf23e01c063c4b9922643b90fe8436480f62fe2ce5c966e2e4d288943de3202a
font_02_sfnt_off00011162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11162 9964 bytes
SHA-256: 9358167c244cdb3ee28bea7e3cba6df689c0d34958188bed39ae67da3c85c533

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