Malicious PDF — malware analysis report

Static analysis result for SHA-256 f830c044778d086e…

MALICIOUS

PDF

85.5 KB Created: 2020-12-27 19:32:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0a103e69999e6314c0a58cdab383a2c3 SHA-1: b9d81501a84afd41862e86d0b67d4d890d155b7c SHA-256: f830c044778d086e65b0230f5aca1ad06156ab9c13ecf6409d607e19ce9246f8
136 Risk Score

Malware Insights

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

The PDF document contains a heuristic indicating it is an SEO redirector link, likely for phishing or malware distribution. The embedded URL `https://traffset.ru/strik?utm_term=what+does+doomscrolling+meaning` is flagged as suspicious. ML classifiers and ClamAV also identified this PDF as malicious, specifically as a phishing trojan.

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
  • 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://traffset.ru/strik?utm_term=what+does+doomscrolling+meaning PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496391/normal_5fde49e50f75b.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/parosukubobededorake.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425224/normal_5fe06f3d1341b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423752/normal_5fd9f92c3e570.pdfIn PDF document text
    • https://mepafuxutare.weebly.com/uploads/1/3/4/6/134660934/14304.pdfIn PDF document text
    • https://lemevepavakupe.weebly.com/uploads/1/3/4/7/134701524/d1dd74d659cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446015/normal_5fd37fe00ca95.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/7e8935e3-d6b1-4ce5-ac77-b24d4a96140a/51306423634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f67b9d55-8914-47a9-8e67-02fc0b277bf9/milton_elementary_school_kentucky.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1851a40d-45e3-4230-8f6f-fa21074d0892/let_it_rain_come_like_you_promised_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ec66132-258e-4276-9781-101ff74b237b/vubazexiredagoziwimijur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/404f920d-9f83-4499-9fc0-8014bfd872cd/6428683899.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_off00011074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11074 5364 bytes
SHA-256: 202382af182aa0d8004ea8e825ce3864c565138cb0e4566af76c7678578bd376
font_01_sfnt_off00012292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12292 11364 bytes
SHA-256: e1870e19ad3a64a698ab058d9ac7526e77de570b072d417b9788ce66222ccfef