Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e13168db1ca9bab…

MALICIOUS

PDF

50.6 KB Created: 2020-11-09 17:46:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6adf3c0aff0eb7340e7b26dabdccd9ae SHA-1: dca6f22cd897ba62cc40fa951de88fda245f047a SHA-256: 6e13168db1ca9baba316b31a88192deaa02d66763edfac560d9cbd0eac11150a
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, ggraff.ru, which is likely used for phishing or distributing further malware. The ClamAV detection and heuristic firings confirm the malicious nature of the PDF, pointing towards a phishing or trojan distribution campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4403

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.
  • 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://ggtraff.ru/aws?keyword=psychology+study+guide+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4401555/normal_5fa036f35836d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366384/normal_5f89b34828998.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_5f9cc213407cb.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/76213852292.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2243c5a0-8ad3-4419-8aa6-fb2ddcb3ed60/bass_guitar_play_along_videos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f2cf1bb-0003-49d5-92f3-8bc6763b8a2b/jofifeler.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc093f65-719f-4260-ab60-b00e572c16d3/71716755933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67c6ab47-45d3-4b0f-97c8-70c484ef0636/6039048533.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/lifobevu.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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