Malicious PDF — malware analysis report

Static analysis result for SHA-256 69884cb1e69e860b…

MALICIOUS

PDF

70.4 KB Created: 2021-02-10 02:28:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 9b56289bb4b73204f76bdd6b675b2309 SHA-1: 65c8ff397d1e6e08d88d6d32511bc1b8b0c97c32 SHA-256: 69884cb1e69e860b796e13a0a0e9ac1c76afc00fc0fb63446178c3503658eeb7
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs pointing to potentially malicious redirector infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The ML classifier and ClamAV detection further support its malicious nature. While no scripts were explicitly extracted, the presence of many links suggests an attempt to redirect users to phishing or malware-hosting sites, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=bridal+chorus+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4475559/normal_5ff2bf4e62cb7.pdfIn PDF document text
    • http://pristav.pro/kukidenokarulamutzryxr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497358/normal_5fd5f7863dbe8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412896/normal_5fce269fd2b7d.pdfIn PDF document text
    • https://sadepejeriroxet.weebly.com/uploads/1/3/5/3/135337628/zilozujakimoti.pdfIn PDF document text
    • http://instapriz.website/futhark_a_handbook_of_rune_magicw22iv.pdfIn PDF document text
    • http://mivibowefumar.iblogger.org/62140756249.pdfIn PDF document text
    • http://reawolt.online/13806279726jr3nx.pdfIn PDF document text
    • http://mushygushysayings.com/nizanoxoruxo0kel5.pdfIn PDF document text
    • http://republvinb.fun/macroeconomics_blanchard_4th_editionq8du8.pdfIn PDF document text
    • http://onatural.space/xazakapixedun599w.pdfIn PDF document text
    • http://confirmationhelpcenter.com/982160709427uzfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462681/normal_6020fbf5bd744.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365626/normal_6001e5f786c26.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xugivazule.rf.gd/headspace_guided_meditation_app_store.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/3068426716.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/update_android_sdk_command_line_windows.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_off0000d7c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C5 5292 bytes
SHA-256: 95102629a9f9c5433c44fb64ab0a7db21975e55523be504d5dc30afeae6fc49b
font_01_sfnt_off0000e9bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BD 10284 bytes
SHA-256: e63a840e74e354343eb92ebe45c724e6c0bbaec46941f0f4fc944b54b6bbb618

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