Malicious PDF — malware analysis report

Static analysis result for SHA-256 a621f7ae5c222ea4…

MALICIOUS

PDF

69.5 KB Created: 2021-02-25 05:14:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2045b14f77c2df2ead71f53d3174322b SHA-1: f1ff8ec3ab24bf98163b960df1ec743ed5462f44 SHA-256: a621f7ae5c222ea4c65733643c1e8d44ee1d8948dd36a20f4e01bfef2e4bf189
182 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics as malicious, including a critical alert for redirecting to known malicious infrastructure. The document contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing campaign. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7495

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/award?keyword=is+the+kindle+fire+hd+7+worth+it In PDF document text
    • http://vopugixeroramox.medianewsonline.com/visenoj.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/papapozabukuja.pdfIn PDF document text
    • https://nixifekenebuj.weebly.com/uploads/1/3/0/7/130775280/2602691.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412379/normal_5ff22fb50b140.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384159/normal_5fc7c86e7bedc.pdfIn PDF document text
    • https://tubemugipowiw.weebly.com/uploads/1/3/4/3/134345788/begajoba.pdfIn PDF document text
    • https://musisemikalig.weebly.com/uploads/1/3/4/6/134694348/xopuremamokukub.pdfIn PDF document text
    • https://cdn.sqhk.co/vewukiziwemi/hXighfM/new_brain_test_tricky_puzzles_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_6034cc249b2de.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502248/normal_5fc886cfcf573.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/the_boy_in_the_striped_pajamas_study_guide_answer_key.pdfIn PDF document text
    • https://bugajujifupub.weebly.com/uploads/1/3/4/8/134894919/6926330.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/zabawavonaletezom.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/35744593758.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/42579767549.pdfIn PDF document text

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