Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d0f649211d5afd…

MALICIOUS

PDF

69.3 KB Created: 2021-03-08 22:14:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 1ba1d17a8e9a8c677ca1106af8c0fa7c SHA-1: b33f990383bbb017396a5d144e2830c19e0e1f31 SHA-256: 50d0f649211d5afde1e4c0d3ce1e1eb8c4a55d93f19ba1128344cb522d91ce07
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable hosting services, and is flagged by ClamAV as Pdf.Phishing.Trojan. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a link farm strategy, and the ML classifier strongly suggests maliciousness. The document body, though heavily obfuscated, contains text related to search queries, reinforcing the lure aspect.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/aws?utm_term=how+old+is+ahsoka+in+star+wars+the+clone+wars+season+7 PDF link annotation
    • https://gemujofu.weebly.com/uploads/1/3/4/3/134372819/4721572.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/chiAjhy/battery_operated_twinkle_lights_with_remote.pdfIn PDF document text
    • https://cdn.sqhk.co/raguwubives/gfjbLih/4_pics_1_word_6_letters_fish.pdfIn PDF document text
    • https://gemamiji.weebly.com/uploads/1/3/4/3/134372226/1383501.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/hdI3ohc/oppa_doll_game_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403938/normal_600eb19262bce.pdfIn PDF document text
    • https://cdn.sqhk.co/relaberof/d7Tjegj/pirudida.pdfIn PDF document text
    • https://bokupotanija.weebly.com/uploads/1/3/5/9/135995636/e043f7d8.pdfIn PDF document text
    • https://zugozoriv.weebly.com/uploads/1/3/4/7/134770463/1794322.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368768/normal_60087b00da93e.pdfIn PDF document text
    • https://kadezejuvi.weebly.com/uploads/1/3/4/6/134603763/6255334.pdfIn PDF document text
    • http://leledup.mypressonline.com/zufetaruvibezogajujitile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5fd7d66968209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470542/normal_603fb38c39a87.pdfIn PDF document text
    • https://wigabededonekan.weebly.com/uploads/1/3/0/7/130740374/rixup.pdfIn PDF document text
    • https://fisujurij.weebly.com/uploads/1/3/1/4/131437504/xadep_lobafonedu_gufiko_femupuxaki.pdfIn PDF document text
    • http://xamawigokoke.mygamesonline.org/logitech_-_harmony_elite_remote_control_and_smart_hub_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408197/normal_6033469a815f8.pdfIn PDF document text
    • http://jeburam.epizy.com/area_of_triangle_worksheet_tes.pdfIn PDF document text
    • http://nujebij.onlinewebshop.net/factoring_quadratic_polynomials.pdfIn PDF document text
    • http://rijonitapadon.myartsonline.com/penetonunenun.pdfIn PDF document text
    • http://lotidasifiteg.epizy.com/34142522964.pdfIn PDF document text
    • http://zusilovame.epizy.com/29641767924.pdfIn PDF document text

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