Malicious PDF — malware analysis report

Static analysis result for SHA-256 5980bc8915605261…

MALICIOUS

PDF

66.6 KB Created: 2020-12-28 22:39:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 9774a86ba662de98f09189b0dbead31d SHA-1: de0fe060fc57ae499a8ee426eca4e12ddefb8b78 SHA-256: 5980bc8915605261c49ed272e88e1e4fc76f13914963b9ae6bf17a6eee1889df
196 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 as malicious by ClamAV and an ML classifier. It contains numerous external links, many of which point to SEO redirectors designed to obscure the final destination. One prominent URL, 'https://trafffe.ru/123?utm_term=goodwill+lancaster+pa+willow+street', appears to be part of a link farm strategy, potentially leading to phishing or malware. The document body, though heavily obfuscated, contains text related to search terms, reinforcing the lure aspect.

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 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffe.ru/123?utm_term=goodwill+lancaster+pa+willow+street PDF link annotation
    • https://vosuwuzede.weebly.com/uploads/1/3/4/7/134743003/solexuviko-lawisixo.pdfIn PDF document text
    • https://junalupi.weebly.com/uploads/1/3/4/4/134460459/zugafekumuziledajozo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_5fa4674b686f9.pdfIn PDF document text
    • https://vaxinukosiju.weebly.com/uploads/1/3/4/6/134625250/sabivufufemanaxi.pdfIn PDF document text
    • https://cdn.sqhk.co/gugapedulob/iiOMdgI/bamitol_bayer_para_que_sirve.pdfIn PDF document text
    • https://cdn.sqhk.co/duzokezubeka/fghQyZp/rise_of_skywalker_cast_general_pryde.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369330/normal_5fcc1c38b841b.pdfIn PDF document text
    • https://mifopezuzata.weebly.com/uploads/1/3/4/4/134484464/4594428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403273/normal_5fd8b7b94756e.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
    • https://s3.amazonaws.com/sefukirexuwekij/sanding_sheets_for_wood_turning.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/complementary_angles_worksheets_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/17963333749.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/washington_county_tn_warrant_list.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/64012772881.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA69 4980 bytes
SHA-256: a931162b4f13bdf8033f45c051644f1070b95d3b151935c0e08006588e8554d3
font_01_sfnt_off0000cb76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB76 11016 bytes
SHA-256: fe0420dd8852839295a801df3ecf7af4e765903947c12b6f048022027a5f4541
font_02_sfnt_off0000ef98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF98 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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