Malicious PDF — malware analysis report

Static analysis result for SHA-256 58571773092f04a1…

MALICIOUS

PDF

80.8 KB Created: 2021-02-16 22:17:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f8001089d26d33b56fd60052e495464c SHA-1: a42551262b57bec201d0e972d8d1d92fc4a1d5b1 SHA-256: 58571773092f04a1b6cf66531702e2d46c05cc3ebb64beb3ce6a2185fc7182d2
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://jacksth.ru/123?utm_term=rock+band+4+dlc+ps4 PDF link annotation
    • http://tertov.xyz/17676764940swhrg.pdfIn PDF document text
    • https://cdn.sqhk.co/fudimesa/CjdOYhj/centipede_grass_seed_lowes.pdfIn PDF document text
    • http://medgaj.com/fun_home_alison_bechdel_barnes_and_noble89qxt.pdfIn PDF document text
    • https://cdn.sqhk.co/gotakavapu/gcijYJO/41162637443.pdfIn PDF document text
    • https://cdn.sqhk.co/judawube/ieHihhi/nfl_network_schedule_tv_passport.pdfIn PDF document text
    • https://vepibasizux.weebly.com/uploads/1/3/1/3/131380915/dusiwinaxi_mewux.pdfIn PDF document text
    • http://storeeu.info/professional_photography_near_meres83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465705/normal_602466fe1479c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401711/normal_602533b0bf3a9.pdfIn PDF document text
    • https://gavofazipog.weebly.com/uploads/1/3/3/9/133999173/216377.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451575/normal_5febd3300e832.pdfIn PDF document text
    • http://onesmall.space/jailbreak_roblox_piggy_escape_prison_obby_robloxwslsq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378152/normal_60076e44a0c1e.pdfIn PDF document text
    • http://lynciguest.com/los_anunnaki_libro0zcu8.pdfIn PDF document text
    • https://gopilabuvimira.weebly.com/uploads/1/3/1/4/131453416/73cea675.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ff23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF23 5268 bytes
SHA-256: 4539de148f18d4e735e7d5e22c46cfbac56a9330876439446703b9de9a1264a3
font_01_sfnt_off00011131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11131 11348 bytes
SHA-256: 32afd606c9c13cfda3eff842cf473e672de88f21b5f6d3b195d8634b902dffa3