Malicious PDF — malware analysis report

Static analysis result for SHA-256 700aa490336006d2…

MALICIOUS

PDF

52.6 KB Created: 2021-03-08 22:24:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa8f25f32af3676cddc4bd162040c9f3 SHA-1: 456bfbfb99c7ee98d51b9c12f5e6f1859733e679 SHA-256: 700aa490336006d273b4408f099d571fd9e3019fde5205e1421b1ddc0ac17732
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as a phishing lure due to its small size and image-heavy content, typical of a screenshot designed to hide clickable links. The presence of numerous external URLs, many hosted on disposable domains, strongly suggests a campaign to redirect users to malicious sites. ClamAV detection and ML classification further support its malicious nature, indicating it likely serves as a delivery mechanism for further threats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9267

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 52 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://bologen.ru/aws?utm_term=g+shock+ga+1000+1a
    • http://cuzinfo.ru/engineering_leveling_guide_8._2j4cer.pdf
    • http://airbin.top/atls_10th_edition_post_test_2019qpu4y.pdf
    • http://flash-sar.online/95995658562too2o.pdf
    • http://helpcopyright-service.com/36057529083hdgs4.pdf
    • https://cdn-cms.f-static.net/uploads/4501482/normal_60110fce15486.pdf
    • http://discovljzg.fun/23302742109st6tb.pdf
    • https://bubafoxir.weebly.com/uploads/1/3/0/8/130874260/f10f1067fc.pdf
    • https://cdn-cms.f-static.net/uploads/4385010/normal_60298daa6f710.pdf
    • https://xokotenesuku.weebly.com/uploads/1/3/1/4/131438709/2726906.pdf
    • http://ranking-se.com/pedajijopatibalujegakifvxn7.pdf
    • http://item-get.top/poviweniderubelugemuvikar3u.pdf
    • https://namovanuzo.weebly.com/uploads/1/3/1/6/131606642/sanidijebediwaledet.pdf
    • http://mosdendy.store/9185750377ek5oq.pdf
    • https://static.s123-cdn-static.com/uploads/4484370/normal_5fdcdc61282a3.pdf
    • https://nezogifoxo.weebly.com/uploads/1/3/1/6/131637357/1597f6471282e4.pdf
    • http://formverifiedbadge.com/hand_tossed_premium_pizza_domino_adalahfoate.pdf
    • https://cdn-cms.f-static.net/uploads/4412588/normal_5fdbda99af237.pdf
    • http://sdek-24.cc/fudutoziwunagmjf2w.pdf
    • https://narusipanunajix.weebly.com/uploads/1/3/1/0/131069819/buboralobapuv_rotozibiwazubis_todedagixen.pdf
    • https://uploads.strikinglycdn.com/files/3d4a96e6-8d9a-46c9-9b69-0c0018470424/what_is_symmetry_breaking_in_particle_physics.pdf
    • https://uploads.strikinglycdn.com/files/5ce6719d-9041-4b78-9148-848dd5abedcb/fakigawemusizawaka.pdf
    • https://uploads.strikinglycdn.com/files/c67e27b9-3dca-456c-ac6c-852f8551ebef/how_to_interpret_data_in_research.pdf