Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cc394169e0daaf9…

MALICIOUS

PDF

58.4 KB Created: 2020-12-22 19:46:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 51275e24579f2ed96df2b5968b5ea5a1 SHA-1: 9f60aa85578d029e776d6cc31c911de6a6897411 SHA-256: 0cc394169e0daaf9dc2f1c1c728fe0f1c9e109b1ca2dff99135d9ba8c1f4a870
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm or a method to distribute malicious content. The ML classifier and ClamAV detection further support its malicious nature. While no scripts were extracted, the presence of malicious links and the overall structure point towards a phishing or content distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9022

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=carnot+theorem+pdf In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/18ad995.pdfIn PDF document text
    • https://fevokokedu.weebly.com/uploads/1/3/4/5/134500062/820be.pdfIn PDF document text
    • https://zapilututok.weebly.com/uploads/1/3/4/3/134341349/wiguz-fawox-tetove.pdfIn PDF document text
    • https://xidalivukudupet.weebly.com/uploads/1/3/4/3/134319957/voxoxewafit.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/90052390366.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/067c94cf-0967-4124-9b56-ca1d1361ea7a/new_x_men_omnibus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/918fe007-d7d2-4f65-9b1f-521eb9d16152/48751190682.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce44794a55824081a6f884/t/5fd649d313a48350e80ec465/1607879124042/62655238276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fb07fae-e367-48b6-9649-f422b7066a04/license_branches_in_evansville_in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04de0a26-ac3b-4ecd-8667-6638d237b28b/silver_pothos_in_aquarium.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4548734-f507-4c59-a5d1-0dbab4eb195c/french_alphabet_sound_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/877a998d-1c87-451b-a5cd-a13e1771d939/sawogozatusavito.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/air_force_rank_and_pay_grade_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1645a11f-ac45-4db5-9ec1-9c9e5715ab52/bloody_mary_folklore_real.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b8b65c4-014d-4db2-bbca-da11b39e1327/pitogotimezekirafusafiso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b734e36b-0293-49a2-be41-8a45190def34/fovorevojixuxu.pdfIn PDF document text