Malicious PDF — malware analysis report

Static analysis result for SHA-256 738d3e1605d1e55b…

MALICIOUS

PDF

16.0 KB Created: 2020-10-26 08:23:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a2273a96d2cf84ee96116c2bfdf6f51 SHA-1: c009938dd757100ccfaea54ed1b93767a980080e SHA-256: 738d3e1605d1e55b7470f1cd77e9f713d7eed695ece2f7a8852106ca8f42da20
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical of phishing campaigns. It contains a critical malicious redirector link and a link farm, indicating an attempt to drive traffic to malicious sites. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs likely lead to further stages of infection or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 4

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 16 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=partes+de+un+balance+general+contabilidad
    • https://xapawijumoj.weebly.com/uploads/1/3/1/3/131379373/048d16cb4.pdf
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/bazagudaw.pdf
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/10610.pdf
    • https://wibugosavuzatug.weebly.com/uploads/1/3/4/3/134349607/aa401394f8ab.pdf
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/d71767245d03.pdf
    • https://bopiwode.weebly.com/uploads/1/3/4/3/134367631/e8551f0.pdf
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f886fce80d89.pdf
    • https://cdn-cms.f-static.net/uploads/4393036/normal_5f925b663a019.pdf
    • https://cdn.shopify.com/s/files/1/0482/5042/1410/files/46217520358.pdf
    • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/18431735210.pdf
    • https://cdn.shopify.com/s/files/1/0500/5901/8408/files/perimeter_of_a_half_circle.pdf
    • https://cdn.shopify.com/s/files/1/0496/5295/7335/files/seedfolks_study_guide.pdf
    • https://uploads.strikinglycdn.com/files/228fd167-6771-4964-bb44-865f9704890c/30295924398.pdf
    • https://uploads.strikinglycdn.com/files/c6b4b48e-fdb3-4005-9934-47cf3e281a4b/33476202181.pdf
    • https://uploads.strikinglycdn.com/files/54a6abb5-278d-44dc-9d83-f261654d9584/gorejogi.pdf
    • https://cdn.shopify.com/s/files/1/0266/9205/9323/files/wow_wotlk_leveling_guide_1-80.pdf
    • https://cdn.shopify.com/s/files/1/0432/2410/5115/files/ammyy_admin_download_for_android.pdf

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