Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffaaf16a2ba007c2…

MALICIOUS

PDF

21.7 KB Created: 2020-10-28 11:18:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 110be167ccbba01448b6bcc96668f216 SHA-1: 826c383356a8f4161465a484fb2e9355df5b237c SHA-256: ffaaf16a2ba007c2602eea4e2b75e3bf3ed77383913fc6ab5af2c4149b185d75
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'momentum worksheet 3 answer key' to entice users to click the malicious URL. The presence of multiple external PDF links also indicates a link farm strategy, often used for SEO manipulation or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 3

  • 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://gettraff.ru/strik?keyword=momentum+worksheet+3+answer+key
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/6110784.pdf
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/1258976.pdf
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/6281772.pdf
    • https://pedomolakikivo.weebly.com/uploads/1/3/4/4/134440841/xaran_lubotisovotumuz.pdf
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/ranituzoxusavogew.pdf
    • https://uploads.strikinglycdn.com/files/1fcfdeda-a9ce-492d-8a22-8496b3bb6a84/viporupixufe.pdf
    • https://uploads.strikinglycdn.com/files/1f45589b-cada-4b32-a553-0666e11c8842/pipuma.pdf
    • https://uploads.strikinglycdn.com/files/b0d1388b-b302-49b3-8d33-0da6a4187f17/lenubebubopaki.pdf
    • https://uploads.strikinglycdn.com/files/02a857f3-52bc-42bf-ad12-a54558bdec56/85244998959.pdf
    • https://s3.amazonaws.com/gofiguj/50321284476.pdf
    • https://s3.amazonaws.com/zedilegol/xilitubosubiwefiwotejabab.pdf
    • https://s3.amazonaws.com/henghuili-files/buwodizodizerijomo.pdf
    • https://s3.amazonaws.com/tetazino/jarijizurewebukogupegu.pdf
    • https://s3.amazonaws.com/felasorarabipis/liwubivobajodepa.pdf
    • https://cdn.shopify.com/s/files/1/0498/9688/2334/files/37571950657.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/civil_engineering_terms_used_in_construction.pdf
    • https://cdn.shopify.com/s/files/1/0433/6739/9575/files/32856857784.pdf
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/radio_presenter_script_example.pdf
    • https://uploads.strikinglycdn.com/files/7d1c2a1b-4886-4fe3-956f-15f328363647/39422387967.pdf
    • https://uploads.strikinglycdn.com/files/9e279007-a18c-4bf8-a8e9-2a53a4da50ec/sinan_meydan_atatrk_ile_allah_arasnda.pdf
    • https://uploads.strikinglycdn.com/files/63c8930c-1de0-4263-80e6-5f577ea12c7c/bivubetonawaberoropoxeda.pdf
    • https://uploads.strikinglycdn.com/files/4347c284-ef17-4c3a-8d99-1f2a35518cab/64750913250.pdf
    • https://uploads.strikinglycdn.com/files/25666fa6-bc17-4c24-a37b-1dbbccbc5247/11199012057.pdf