Malicious PDF — malware analysis report

Static analysis result for SHA-256 97fb0e78b422a46a…

MALICIOUS

PDF

79.3 KB Created: 2020-11-24 17:22:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 704a03733eb167361365b526960f5be8 SHA-1: 56d07f9a832ebc4e6663585cb2eddbaa405a74b5 SHA-256: 97fb0e78b422a46a2ec5702c36f36faba93bd5dcb938eb124b206f9ba9f6b0b4
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links, many pointing to what appears to be a link farm designed for SEO manipulation, with a critical heuristic firing for malicious redirector links. The primary redirector URL is 'https://traffine.ru/strik?utm_term=hello+love+goodbye+watch+online+hd', which is also flagged as a lure for free downloads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9852

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/strik?utm_term=hello+love+goodbye+watch+online+hd In PDF document text
    • https://rivadosogub.weebly.com/uploads/1/3/4/8/134880553/naxemiga-zanokufurita.pdfIn PDF document text
    • https://timokejega.weebly.com/uploads/1/3/4/4/134454798/voxuf_solasiwi_wowofareno_subaxamakesune.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/waxapoz/tadurawogo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49f09a72-8558-448a-978d-271429cdb732/animal_diversity_7th_edition_test_bank.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/83298969629.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/89039652084.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/linojapex.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/ares_and_athena_love.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_off0000f7d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D6 5284 bytes
SHA-256: ea7e25cb6c0a19dffb736df30656209937cb314a45659959874266fdbae17678
font_01_sfnt_off000109e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109E7 11376 bytes
SHA-256: 924f8e7f236f4c96b68b899b48454a3746e827532f33466a628d620c2f574951

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