Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffca2a6164f0a54f…

MALICIOUS

PDF

66.6 KB Created: 2021-02-12 02:43:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 24b16c2bae73b3682a1e7c5c556d3b6f SHA-1: 03699a57306d5e279dcd370722bb025abd2e8887 SHA-256: ffca2a6164f0a54fa66babe27a76e0ec7fd9f583a92414b63415180d54e2fb91
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many pointing to disposable domains and subdomains, indicative of a link farm or phishing campaign. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the PDF structure and numerous external URLs suggest an attempt to redirect users to malicious content.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/123?utm_term=seven+bridges+cinemark PDF link annotation
    • https://cdn.sqhk.co/runolisor/jaT4Fhg/foxetuwepozibepelukeko.pdfIn PDF document text
    • https://fazolusafiwef.weebly.com/uploads/1/3/4/5/134585025/4973875.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/iciiGo5/cookie_cats_blast_new_levels.pdfIn PDF document text
    • https://wadewasugidaf.weebly.com/uploads/1/3/0/7/130775384/e73db156.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388174/normal_5fe4d022286d4.pdfIn PDF document text
    • https://wavogovarixu.weebly.com/uploads/1/3/1/3/131379914/5b4b34.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/jiojiib/crash_test_dummy_costume_fall_guys.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxinugokas/BGgghgN/55315974259.pdfIn PDF document text
    • https://cdn.sqhk.co/zudoputasafe/egerhhB/96063781590.pdfIn PDF document text
    • https://bowineno.weebly.com/uploads/1/3/4/8/134868267/9999490.pdfIn PDF document text
    • https://tewazaxapij.weebly.com/uploads/1/3/4/8/134873756/85e109ee1f3cf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503791/normal_5ff047ca406a6.pdfIn PDF document text
    • https://wisokovunali.weebly.com/uploads/1/3/6/0/136051549/rosifotikotabiw.pdfIn PDF document text
    • https://cdn.sqhk.co/netimupoxojo/dZx7he0/where_to_learn_python_3_for_free.pdfIn PDF document text
    • https://wuduzavuvavazi.weebly.com/uploads/1/3/4/6/134618101/f1505587.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/ggmshj9/dr_martens_1460_pascal_reversible_sequin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402951/normal_5fe89e6b2586e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000badd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBADD 5192 bytes
SHA-256: 443e07efd249ca7338348526087cf78939bfc2f5c80364f53764c64016625fbb
font_01_sfnt_off0000cc5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5F 9888 bytes
SHA-256: 12fa07f27dbb1cf4f9ebb2ff36c26566461cf969575034ba5c2695807074b513
font_02_sfnt_off0000ee13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE13 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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