Malicious PDF — malware analysis report

Static analysis result for SHA-256 67f68a0a8ed65612…

MALICIOUS

PDF

24.7 KB Created: 2020-10-27 03:29:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a75ea274a7d58d04c62c5d0af73301bf SHA-1: 73229806e4f9fc8ddf7ab37c90a8d0ea527dc608 SHA-256: 67f68a0a8ed656121a46ade8d68f9b30f33d26c29b75845248cbe6b28b762a03
172 Risk Score

Malware Insights

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

The PDF is designed as an image-only lure, typical of phishing campaigns, to entice users to click on embedded links. The primary link, https://cctraff.ru/strik?keyword=the+arreat+summit, is identified as a malicious redirector, indicating a high likelihood of leading to further malicious content or exploits. The presence of numerous other PDF links suggests a link farm or a method to obscure the final destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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 24 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://cctraff.ru/strik?keyword=the+arreat+summit
    • https://cdn-cms.f-static.net/uploads/4378170/normal_5f8b05d75de29.pdf
    • https://cdn-cms.f-static.net/uploads/4369313/normal_5f8a1dc40d992.pdf
    • https://welofubevi.weebly.com/uploads/1/3/1/8/131856084/tirezisuzafilix_zebifefor_tasiti_guxotevegomulu.pdf
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/kekikefuwu.pdf
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/divili_dapixi.pdf
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f88bdbd532e6.pdf
    • https://cdn-cms.f-static.net/uploads/4384046/normal_5f97757963023.pdf
    • https://cdn-cms.f-static.net/uploads/4414342/normal_5f9600505412b.pdf
    • https://cdn-cms.f-static.net/uploads/4373261/normal_5f8cbd5976787.pdf
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/3171713.pdf
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/jonigejewelikubizalu.pdf
    • https://rulomegujenuguv.weebly.com/uploads/1/3/4/3/134329868/bizulexeru-balasibolujamu-loketivajotalo.pdf
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/2278369.pdf
    • https://uploads.strikinglycdn.com/files/035f0d2b-286d-4bad-a04c-445188eb3c2e/45243777121.pdf
    • https://uploads.strikinglycdn.com/files/f7ef9e1e-f74e-4af9-aac1-1d0620eb3932/veposejegoruvodod.pdf
    • https://uploads.strikinglycdn.com/files/586535c1-d636-4566-a6d9-fd0075d81879/31676181022.pdf
    • https://uploads.strikinglycdn.com/files/de16fd03-b49f-4c26-8ff5-212b95fc2170/81868993944.pdf
    • https://uploads.strikinglycdn.com/files/ca2dda30-3961-4ca0-9c07-3586e013c086/britannica_encyclopedia_android_apk.pdf
    • https://s3.amazonaws.com/wiwamoxamo/93364730457.pdf
    • https://s3.amazonaws.com/wilugugo/67158405629.pdf
    • https://s3.amazonaws.com/nalifij/aminoacidos_y_proteinas_bioquimica.pdf
    • https://s3.amazonaws.com/potofaw/kitekepuf.pdf
    • https://s3.amazonaws.com/tetazino/canciones_faciles_para_guitarra_principiantes.pdf