Malicious PDF — malware analysis report

Static analysis result for SHA-256 832a06c0288d075b…

MALICIOUS

PDF

43.7 KB Created: 2020-11-18 05:59:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 757c536513c2e5c84260daddfc299a8f SHA-1: c994422315f0e78de741040f2a532476b5a2ac58 SHA-256: 832a06c0288d075b6e5e796051fb17daccdb3bf0c519406d4ed255fa1037460f
212 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though partially garbled, contains text related to downloading a game, suggesting a lure. The presence of numerous PDF links, some pointing to potentially malicious or SEO-farmed content, indicates a campaign to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5298

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 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.
  • 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://traffmen.ru/strik?utm_term=descargar+castlevania+aria+of+sorrow+espa%25C3%25B1ol+gba+rom In PDF document text
    • https://cdn-cms.f-static.net/uploads/4466146/normal_5fa3e8a3929ef.pdfIn PDF document text
    • https://jikevumuvovidu.weebly.com/uploads/1/3/4/3/134324483/vemeno-zemobos-zoruw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f8c741b7772d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380674/normal_5f9bb81fd9465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b066a5b-a8b2-4997-9e82-4068bb56ac47/sefizefubara.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/34773402467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9bdb2f1-c9a1-4ff3-ad49-c6d71857235a/22438986022.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/travelling_allowance_form_for_central_government_employees.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/hungry_shark_world_hacked_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/54363547441.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/2067268901.pdfIn PDF document text

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