Malicious PDF — malware analysis report

Static analysis result for SHA-256 8260e0ac124e3051…

MALICIOUS

PDF

16.0 KB Created: 2020-10-30 06:04:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: da0be4a9fa744dcc7c5bd408127a74fa SHA-1: 60b62a0cbd3bd8d8dba1195fa9be8db8db129c1b SHA-256: 8260e0ac124e3051d3a033812500edc59fe45d5981e489d3dae46a8d753e5ef0
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or SEO poisoning tactic. The primary malicious URL, https://gettraff.ru/123?keyword=best+mp4+player+windows, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, reinforcing the lure to click external content. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 4

  • 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.
  • 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://gettraff.ru/123?keyword=best+mp4+player+windows In PDF document text
    • https://rebabamebuno.weebly.com/uploads/1/3/4/3/134355200/jufukupa_diputojo.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/bates_physical_examination_mcqs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee755173-af95-4145-8196-6aea1d002e4c/rovebitipupalerojapaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/shrek_2_movie_script.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/875abd56-29a9-4f28-9ba2-3b88624a6d92/buvixutonazeno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9553/1424/files/polytechnic_trb_syllabus_for_english_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/63063422940.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/administration_du_personnel_maroc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2050/7065/files/nijaravimitixatinepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6061/6599/files/android_17_18_cosplay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8467/6249/files/unilever_annual_report_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7586/5250/files/mouse_lemur_life_cycle.pdfIn PDF document text

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