Malicious PDF — malware analysis report

Static analysis result for SHA-256 054f76f3dfce2abc…

MALICIOUS

PDF

73.4 KB Created: 2020-12-30 04:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 6f8340f08e856cb6f1ad7921028c6d1e SHA-1: 390c858f4b2da73fb80447090e850587bb182d44 SHA-256: 054f76f3dfce2abc9e11eb812b445de4623fbfc94866f11797908b18ff96fea9
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, as malicious and phishing-related. The embedded URL `https://trafficel.ru/strik?utm_term=cdc+guidelines+for+covid+exposure+quarantine` is identified as a redirector likely used to deliver a malicious payload or lead the user to a phishing site. No scripts were extracted, but the overall structure and URL suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/strik?utm_term=cdc+guidelines+for+covid+exposure+quarantine PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f8c97e931f88.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/hcicEv9/bird_feeder_squirrel_proof_diy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407069/normal_5fb830248b6a3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384318/normal_5fc6d75547fb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480393/normal_5fca06a3bf9e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368746/normal_5f95d1cd6af03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369315/normal_5f8845babb419.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/hceicgf/14537072980.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb003b93-019f-4a32-89eb-fa76a35b0e03/17870132243.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/bssc._bih._nic._in_admit_card_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/old_man_logan_comic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b067d317-76c6-44f0-a488-c29e7f09d2cb/watsons_go_to_birmingham_chapter_questions.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_off0000e0a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A2 5480 bytes
SHA-256: 13a1075fd0d3a1bb3553c002dce35c34e403d6fc71b3ae5049e8745700833e01
font_01_sfnt_off0000f358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF358 10884 bytes
SHA-256: 2e3becc48f58caacdcf01e07f8e4118e2c0db4f8085a9e974fe0b0500dcaac40

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