Malicious PDF — malware analysis report

Static analysis result for SHA-256 5175ad3958646fe9…

MALICIOUS

PDF

71.3 KB Created: 2021-02-18 10:28:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6c5c6f04cb2f12cc84e9d39809fb10e0 SHA-1: e16a2b0e322db24466619ded900b609ecc922538 SHA-256: 5175ad3958646fe959d8829fadd62da3104319f5df5272f4a0810179670d3c5d
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://druttle.ru/wix?keyword=fluval+g3+conductivity+out+of+range PDF link annotation
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/b951f88e33.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/hjs2icU/bloons_adventure_time_td_mod_apk_android_1.pdfIn PDF document text
    • https://pulatufulufu.weebly.com/uploads/1/3/4/6/134610330/mesipiru_tixav_lusujo.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/Sigjcgf/70038304005.pdfIn PDF document text
    • https://cdn.sqhk.co/kurafuso/jggjJij/real_steel_boxing_champions_mod_apk_android_1.pdfIn PDF document text
    • https://mafugefowodofo.weebly.com/uploads/1/3/1/3/131378796/7095580.pdfIn PDF document text
    • http://mavito.online/baaghi_1_movie_movierulzup0ih.pdfIn PDF document text
    • https://vavuloxen.weebly.com/uploads/1/3/0/7/130738497/xatolexo-liritobopomej-sugelok.pdfIn PDF document text
    • https://subilitukufune.weebly.com/uploads/1/3/4/6/134629352/xizalirosigeni_zajupuw_tepawajimaro.pdfIn PDF document text
    • https://dufebekeromodi.weebly.com/uploads/1/3/0/7/130776386/getezidakagena_gupojavu_kovatomixafarot_ribosi.pdfIn PDF document text
    • https://zuveravovizopow.weebly.com/uploads/1/3/0/9/130969477/binagemeturetil-fukame.pdfIn PDF document text
    • http://peludofnor.fun/capsaicin_patch_walgreensv8a9w.pdfIn PDF document text
    • http://future-techno.ru/sejalusenetugibtezo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://segizeja.rf.gd/13618914593.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_off0000d838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD838 5292 bytes
SHA-256: 3d4b8bfe177dc6bb8e9a4da7e718a18f1b930f518d89d59cc82e74be49386f51
font_01_sfnt_off0000ea60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA60 11212 bytes
SHA-256: 0bfa45ef4b3d9ad7cdf9c3cd1baa8d6957c44c800e0175d0a7d15b89ce0a516d

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