Malicious PDF — malware analysis report

Static analysis result for SHA-256 06fa184898fa076e…

MALICIOUS

PDF

81.5 KB Created: 2021-05-15 01:02:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: b1cddb81a3f48adabde9704106d28d68 SHA-1: 3453f21273fdbcf4a075da2c6f62ddbe45d30a2b SHA-256: 06fa184898fa076e5dd3cda962e4f322bbe761c6e3e830880a56e53215cc60c3
146 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, exhibiting characteristics of a phishing or callback scam. The document body, though heavily obfuscated, contains embedded URLs that likely lead to further malicious content or phishing pages. The presence of numerous external URIs and link farm indicators suggests an attempt to distribute malicious content or redirect users to phishing sites.

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://xezojetit.ru/strik?utm_term=jeannette+walls+interview+half+broke+horses PDF link annotation
    • http://lightly.store/16315708034ohwdv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408330/normal_602be80286526.pdfIn PDF document text
    • https://cdn.sqhk.co/fosikikevo/jiuGjbN/download_ninja_tobu_mod_apk.pdfIn PDF document text
    • http://didibemez.scienceontheweb.net/ielts_speaking_answers_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/mukujoripu/Gmoulid/cnc_lathe_machine_for_sale_in_lahore.pdfIn PDF document text
    • http://idealslimitaly.site/mapoluvitagigepudagepuwogtyrk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450351/normal_601bb8dd79e4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417675/normal_603f3294bc857.pdfIn PDF document text
    • http://kovamuwaropepu.getenjoyment.net/forogekonaroziluno.pdfIn PDF document text
    • http://alsamcctv.com/538145349785j2ir.pdfIn PDF document text
    • http://alex-chekalev.com/caillou_theme_song_violin_sheet_musico79hg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474734/normal_6002e246d6de6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408330/normal_5fe6c6fb275f5.pdfIn PDF document text
    • http://usecabinets.xyz/ham_radio_license_canada_costq2rp4.pdfIn PDF document text
    • http://nature-ital.space/dual_fuel_inverter_generator_for_rva5efp.pdfIn PDF document text
    • http://gmetry.online/how_to_use_ergo_360_infant_insert5ei4i.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://636e06b3-920c-4898-b827-ef778bbbc101.filesusr.com/ugd/40512e_5feab162c7a342e891a67cbb9123525f.pdf?index=trueIn PDF document text
    • https://7ce190f9-fb8d-496c-a51a-ce151dcc024a.filesusr.com/ugd/e72def_5cff4fc524b24b9e90537c36240c2d0c.pdf?index=trueIn PDF document text
    • https://11ca5eb4-0abe-4d5d-8073-3f36f6088e80.filesusr.com/ugd/8b62d8_6d2c0e10944c4d70aa0231ba37140936.pdf?index=trueIn 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_off0000fe8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8D 5200 bytes
SHA-256: 258fd2efecf2d78673d3715e77dc65f18a56d85eb99b28239652e5d678c694cb
font_01_sfnt_off00011055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11055 11652 bytes
SHA-256: 6da4f8e4b779f5e56f7c62cbe38112fc1cc3aeeddb3e47930cbe7247bee43c81

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