Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f934824975dbf67…

MALICIOUS

PDF

72.8 KB Created: 2021-06-03 10:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0020f8a35720056df6dbdde10f3c9bd0 SHA-1: b3231f2a240f09c9962e98eef1e1faee7e65ef97 SHA-256: 9f934824975dbf6771806d948629594981b2c1bdf071969b8ce35ec6eee27515
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, some of which are part of a link farm, and a heuristic indicates a visual download button lure. The document body, though heavily obfuscated, contains keywords related to 'hidden photos' and 'password', suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cdn-cms.f-static.net/uploads/4377403/normal_6031e958d4a5a.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382780/normal_5fd2d948b577c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383795/normal_6029a73ceab74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391303/normal_5feea385aee9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369784/normal_6001846a57576.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387060/normal_6018be42db355.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4368777/normal_60b430f0f0522.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391599/normal_5fd6109088fe8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382770/normal_5ff78ba051dec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485828/normal_60697683a5e90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369343/normal_6055875f444ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/kMuynZNWtA0/wb?keyword=hidden%20photos%20ios%20passwordPDF link annotation
    • http://xifatarege.pbworks.com/f/the_iliad_latin_text.pdfIn PDF document text
    • http://bujolajoxek.pbworks.com/f/parotuzogogewof.pdfIn PDF document text
    • http://neruwuk.pbworks.com/f/printable_calendar_2021_may_through_august.pdfIn PDF document text
    • http://mevuteled.pbworks.com/f/are_boltune_headphones_good.pdfIn PDF document text
    • http://noxiwako.pbworks.com/w/file/fetch/144506160/daxijegepitidofulaxa.pdfIn PDF document text
    • http://rozeluf.pbworks.com/w/file/fetch/144555489/gta_vice_city_kurtlar_vadisi_indir_tamindir.pdfIn PDF document text
    • http://wijozuzapusa.pbworks.com/w/file/fetch/144439248/lewis_dot_structure_for_iodine_ion.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_off0000deba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBA 5068 bytes
SHA-256: 0608d2d9015fff343073bfea1fa0a6cbaaa3dd118c4317016576461eabd93709
font_01_sfnt_off0000effc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFC 11092 bytes
SHA-256: 6ff3951eedd7b449c1e9cdf80a0ee2d122f37b4441d1de018d7e29a611c6d217

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