Malicious PDF — malware analysis report

Static analysis result for SHA-256 db5f0e5f20df684d…

MALICIOUS

PDF

16.0 KB Created: 2020-10-27 00:39:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2bf42405c050a77145ca3a37f2cf67b SHA-1: 7c07b06975ba735ad9d41a10cc31c6dbdc77a641 SHA-256: db5f0e5f20df684d8e95e0b7dc3aba80e2f72ee14e3b763b4a1de696faa910ea
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF is an image-only document designed as a lure, containing a clickable link that redirects to known malicious infrastructure. The presence of numerous external PDF links suggests an attempt to manipulate search engine rankings or distribute further malicious content. The ML classifier strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://ggtraff.ru/strik?keyword=cohen+testimony+stream+c+span
    • https://cdn-cms.f-static.net/uploads/4389365/normal_5f8f77830ae38.pdf
    • https://cdn-cms.f-static.net/uploads/4372723/normal_5f8cc8f6eb788.pdf
    • https://cdn-cms.f-static.net/uploads/4369923/normal_5f91022580a1c.pdf
    • https://cdn-cms.f-static.net/uploads/4380887/normal_5f974a61afc93.pdf
    • https://cdn-cms.f-static.net/uploads/4378425/normal_5f9284685e07b.pdf
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f89c69b2c970.pdf
    • https://veraweno.weebly.com/uploads/1/3/0/7/130739577/mekofiwakomujuw.pdf
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/3a350d050964.pdf
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/kibedoxixifimebi.pdf
    • https://uploads.strikinglycdn.com/files/bc0cc3f8-ba96-4ea5-9ef9-fb0c0f6823f3/63941349551.pdf
    • https://uploads.strikinglycdn.com/files/7582fcd7-bd97-4ab7-aa4f-6552ce6ef2f9/braun_oral_b_replacement_wireless_sm.pdf
    • https://uploads.strikinglycdn.com/files/ad8ef16b-ea7c-440c-879d-39eec3d40080/resufixexuw.pdf
    • https://uploads.strikinglycdn.com/files/57789774-36c4-4bc5-abb4-271ced0e5421/36766951238.pdf
    • https://uploads.strikinglycdn.com/files/a7b59ca0-cc93-405f-9014-f126e397e817/5218620404.pdf
    • https://uploads.strikinglycdn.com/files/472c0469-ea80-4f8b-befc-538dfdc94769/18332865393.pdf
    • https://uploads.strikinglycdn.com/files/1a6b9aa0-e7e3-4d55-a5ca-7f41408c5fc6/gegixezefew.pdf
    • https://uploads.strikinglycdn.com/files/69ba5ab3-d57a-48e3-9dba-44880137ea9d/41661914499.pdf
    • https://uploads.strikinglycdn.com/files/da720f05-c694-4b98-b249-6dd3c10ba251/anlisis_de_la_cancin_desolation_row.pdf
    • https://uploads.strikinglycdn.com/files/84e0d16e-c3e1-462c-b6e4-b74df69a41fd/letaregofanexu.pdf
    • https://uploads.strikinglycdn.com/files/f3b55a33-c5ca-403d-baf7-a62d854c6984/palimabarotukaxizu.pdf
    • https://uploads.strikinglycdn.com/files/421575a9-ede8-440e-a463-224fde0af8b5/tatoparigazozubuwanopefe.pdf