Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada165115568d2e9…

MALICIOUS

PDF

67.6 KB Created: 2021-02-07 20:18:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c68c04b1cbe10b2b9f32757f24ec938b SHA-1: 6e83bbae3624b19d44de826cf47b41fd73b1d02c SHA-256: ada165115568d2e9cf22263d94dd30f6446c45b5a89b6ea9746ea4ef151e5205
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many of which appear to be part of an SEO link farm designed to redirect users to malicious sites. The primary lure uses a search term related to 'Arellano university senior high uniform' to entice clicks. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to deliver a malicious payload or redirect to a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7441

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
  • 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
  • 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://bologen.ru/aws?utm_term=arellano+university+senior+high+uniform PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4412778/normal_5fcd40e64e141.pdfIn PDF document text
    • https://tuxufinuzeleki.weebly.com/uploads/1/3/4/7/134737217/3615278.pdfIn PDF document text
    • https://wisatevifo.weebly.com/uploads/1/3/0/7/130775851/mepetek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407070/normal_6001fe7e42684.pdfIn PDF document text
    • https://kepijiloxa.weebly.com/uploads/1/3/4/1/134108658/2384335.pdfIn PDF document text
    • https://cdn.sqhk.co/budajawisore/iCdTeNQ/mutofekid.pdfIn PDF document text
    • https://cdn.sqhk.co/kiraxozi/ghieihq/70204285266.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482638/normal_5fffba3f20eaf.pdfIn PDF document text
    • https://cdn.sqhk.co/wolebiduju/ghSBjhc/xesiruxanaxawixuwogezib.pdfIn PDF document text
    • https://xuwupeloz.weebly.com/uploads/1/3/4/7/134734270/2735558.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393911/normal_5fc9975c8e510.pdfIn PDF document text
    • https://rupebadik.weebly.com/uploads/1/3/4/4/134465272/4028940.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413473/normal_5fec8bbb2b763.pdfIn PDF document text
    • https://cdn.sqhk.co/koluvukirate/Mk2gjii/bowl_over_wsj_crossword_clue.pdfIn PDF document text
    • https://zevexeduj.weebly.com/uploads/1/3/0/8/130874566/6240070.pdfIn PDF document text
    • https://fokinovev.weebly.com/uploads/1/3/0/7/130775288/motofi-domutemog-kufaxibori-notepopij.pdfIn PDF document text
    • https://marejipafikelor.weebly.com/uploads/1/3/1/4/131437604/sumisovotigelok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384318/normal_601d5d6e65265.pdfIn PDF document text

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