Malicious PDF — malware analysis report

Static analysis result for SHA-256 033bd91b6c9e2050…

MALICIOUS

PDF

71.6 KB Created: 2020-12-30 20:58:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 496a6b4962d3a3c6afc4592380e75094 SHA-1: 42d383cd08ca8e2233d11bb84ed5a95c2d4d2a96 SHA-256: 033bd91b6c9e2050fa3201e7c8b6be8f1bf60472e74b0d26894f64e0621eb291
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which point to redirectors or potentially malicious content, suggesting it's part of a link farm or phishing campaign. The primary URL, 'https://traffnew.ru/strik?utm_term=the+trip+to+greece+places+visited', is likely used to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffnew.ru/strik?utm_term=the+trip+to+greece+places+visited PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375203/normal_5fea26d93daf4.pdfIn PDF document text
    • https://lawagupavuraxap.weebly.com/uploads/1/3/4/6/134616311/7992656.pdfIn PDF document text
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/bofikamatunaxexifa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_5f8a18959028d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f8708e1c16f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411931/normal_5fda4b9480254.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420260/normal_5fa9c455bfec0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368976/normal_5f937ef5f10f7.pdfIn PDF document text
    • https://zademufexek.weebly.com/uploads/1/3/4/7/134765537/d0f67.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/e2a966b1-79d4-49c1-92ac-29e05b1fe6f8/fadal.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_off0000daef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAEF 5344 bytes
SHA-256: 79b667bb4608e3df7524a5a824b3a5eb5a7cefb6d944ea12eb91be4b66804590
font_01_sfnt_off0000ed1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1E 10644 bytes
SHA-256: 1224d3566887916f5e5a4c4234bab1937535a9fb2f81cdb27db5db605f76228a

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