Malicious PDF — malware analysis report

Static analysis result for SHA-256 c448498f8d3f6931…

MALICIOUS

PDF

72.9 KB Created: 2021-03-19 20:18:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0bc72fbef7fd20effcd0df02646a8e1a SHA-1: 8032d87870a8f0d9c4b0972147d33086e2be1b3c SHA-256: c448498f8d3f6931ce132fa00105ab36c0ab5685b17810cff1a1ac025f7fb05e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF with multiple embedded URLs, many of which point to disposable hosting and are used in a link farm pattern. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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
  • 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://bologen.ru/123?utm_term=catalytic+antibody+pdf PDF link annotation
    • http://temppicture.xyz/notutubosuwazuzojugojufuve9m9s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485162/normal_6044cc9fd4f84.pdfIn PDF document text
    • https://cdn.sqhk.co/zunowexafa/NthfiiV/tawiga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475570/normal_5fea27a7b2f85.pdfIn PDF document text
    • http://yellownatural.space/brothers_in_arms_3_pcm74ii.pdfIn PDF document text
    • https://cdn.sqhk.co/piredonina/fRafEhg/vexurokaw.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/bjji7hc/ion_blade_trimmer.pdfIn PDF document text
    • http://differencecheats.net/67368229129p0800.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453734/normal_5ff5b94a8680c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473640/normal_6049f3b370e15.pdfIn PDF document text
    • http://rafale.store/32343418865q09ss.pdfIn PDF document text
    • http://creditscoretrack.info/la_guerrera_novela_capitulos_completitw8l.pdfIn PDF document text
    • http://oneplusonemain.xyz/quote_letter_template_word723wq.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/PZclfgc/streamlabs_chatbot_documentation.pdfIn PDF document text
    • http://pribor-poverka.site/my_boy_gba_emulator_android_103mv6.pdfIn PDF document text
    • https://cdn.sqhk.co/lexaxemiji/ujdSthf/math_facts_flashcards_for_1st_grade.pdfIn PDF document text
    • https://cdn.sqhk.co/menasimax/c0jatjj/ball_sort_puzzle_level_504.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/gD9yG6J/97759121442.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9608b473-7acb-4115-8305-7416bca97ac3/confess_by_colleen_hoover.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3098d933-0ad7-44d4-a5f2-f86cd7b3d45a/48936827449.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a663ccd-9e32-4fd0-9ffc-2e60b216df0c/beyond_the_mountains_of_madness_reprint.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CE 5020 bytes
SHA-256: f29b951452a236041cd0d162683100a22f766682f8e2ff2c01021579941a7df7
font_01_sfnt_off0000f2f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F9 10424 bytes
SHA-256: 661be0ef0d0e8f1d964b477156f83e75819c0df869272421e5b1f162446e6378

Open this report in the interactive analyzer, or submit your own file for analysis.