Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5ecf0609c02cc7…

MALICIOUS

PDF

40.6 KB Created: 2021-02-17 05:17:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 38e79d7153dcff989d52b3054ce65bcc SHA-1: c875c355d06b8266021225135a668176881fd65c SHA-256: 8a5ecf0609c02cc7429f0528a2849d7640fd5c67afd87cc9a4d38da1c63eada5
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing lure. It contains an image designed to obscure a clickable link, directing users to `https://bologen.ru/aws?utm_term=vegetarian+indian+recipes+madhur+jaffrey`. The presence of numerous external links suggests an attempt to redirect users to potentially malicious content or phishing sites. No scripts were extracted, but the overall structure points to a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8075

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=vegetarian+indian+recipes+madhur+jaffrey PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367310/normal_60280d36c02b8.pdfIn PDF document text
    • http://pixerofojoka.22web.org/spring_coloring_worksheets_for_preschoolers.pdfIn PDF document text
    • https://matexofetuboso.weebly.com/uploads/1/3/1/4/131453592/fefb76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475391/normal_5fd9198d1078a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495860/normal_60043e2b679e9.pdfIn PDF document text
    • https://tebivozov.weebly.com/uploads/1/3/2/7/132740763/3611278.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422135/normal_5ffe566055173.pdfIn PDF document text
    • https://tavovoxiwazufaj.weebly.com/uploads/1/3/5/3/135325502/8540b.pdfIn PDF document text
    • https://xojumupaxasa.weebly.com/uploads/1/3/4/6/134605953/xoxiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470540/normal_5ff8993181370.pdfIn PDF document text
    • http://vanofixib.epizy.com/98676773562.pdfIn PDF document text
    • http://worupowa.epizy.com/pns_ct_scan_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/pneumatic_hand_tools.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/abaqus_theory_manual_6._11.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/mandatory_reporting_guide_tool_qld.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/android_10_nokia_9.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/free_printable_paper_gingerbread_house_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/84900742637.pdfIn PDF document text

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