Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d1c7ecf92af970…

MALICIOUS

PDF

66.7 KB Created: 2020-11-24 22:15:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 3fe0b918fdc04d6a48ead1b0ccebfe37 SHA-1: 35d04416487559d6d4521bb6ed4c2a7d90c4f303 SHA-256: e5d1c7ecf92af97000f7ea8613a41699a5709a69d0a37e708f66329f4e677179
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many pointing to SEO redirectors, suggesting a phishing or scam campaign. The heuristic PDF_SEO_LINK_FARM and PDF_SEO_UTM_REDIRECTOR_LINK indicate a large number of links designed to lead users to external sites, with one prominent URL being trafficked.ru. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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.
  • 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://trafftec.ru/strik?utm_term=hawaii+state+id+renewal PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389384/normal_5f9af1724f004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f8b02232dee9.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/b919b1ed8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416128/normal_5f9894f5b7f38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373522/normal_5f9297ef4947e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388046/normal_5fa14b585bea8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488822/normal_5fb868170459a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497646/normal_5fad9568b4677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381302/normal_5fba052b11281.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472216/normal_5fb83ccc8db78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470409/normal_5faae1c3a8939.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5fb3782da59b4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jolufozo/25883366220.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/90472488749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7c60a2d-3c15-4a6a-a243-cfcb4c7020f6/wosajaxilusexi.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_off0000c970.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC970 4872 bytes
SHA-256: 3df8110e5b30634fe60a6c8c26a4b9bfb3ba716ded57d1c0deda89350576e37e
font_01_sfnt_off0000da1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1A 10596 bytes
SHA-256: a5adc71358a4ae7de587bcde16e9896b04fc16dcfa773816f41886c25b3425c8

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