Malicious PDF — malware analysis report

Static analysis result for SHA-256 34aa573ff41ea04f…

MALICIOUS

PDF

76.3 KB Created: 2021-04-03 22:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1ba8a61e711184d66167f162ffc5949 SHA-1: c42387857ff503e8fd9db8217010e492252a1f3a SHA-256: 34aa573ff41ea04fa79bf15cdc3f6ff0fb911ea1d13ce4192015b22e59cd4cc3
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains multiple embedded URLs, with a primary suspicious URL being dugedepap.ru, which is presented as a search result. The document body, though heavily obfuscated, suggests a lure related to nursing uniforms, likely to trick users into clicking the malicious link. The presence of numerous external URIs and a link farm heuristic further supports a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9353

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/award?keyword=significado+de+uniforme+blanco+de+enfermeria+pdf
    • https://kegotewu.weebly.com/uploads/1/3/1/4/131437679/6112896.pdf
    • https://dizogesutupini.weebly.com/uploads/1/3/4/6/134631076/seforitidi-ziluzimati-xemapomu.pdf
    • http://edapog.online/wordpress_admin_login_logo_changewl7e2.pdf
    • http://nigavereke.mygamesonline.org/71866428558.pdf
    • https://rogebanapixiwo.weebly.com/uploads/1/3/5/3/135343373/11a9d.pdf
    • http://vas-rem.ru/48660769520vvt4o.pdf
    • http://mateguwokalidub.getenjoyment.net/survival_and_austere_medicine.pdf
    • http://copyrightsupporteds.com/17050926988n3jkt.pdf
    • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/nurozubol.pdf
    • http://jobauthor.online/it_recruiter_interview_questions_and_answers_for_freshers7h1dx.pdf
    • http://mmamba.ru/beats_by_dre_powerbeats_pro_black_fridaytsimd.pdf
    • http://tlgfree.xyz/pocket_door_kit_24_inchrnhjp.pdf
    • https://kujivorel.weebly.com/uploads/1/3/0/7/130776875/254ecde92147.pdf
    • http://fosipuzo.mypressonline.com/pengaruh_agama_dan_kebudayaan_hindu_budha_di_indonesia.pdf
    • http://instacopyrightcenter.com/2006_dodge_ram_1500_owners_manualjbzp1.pdf
    • http://tikanaw.mypressonline.com/nunifewele.pdf
    • http://vedivux.mygamesonline.org/lala_ramswaroop_calendar_2020_september.pdf
    • https://uploads.strikinglycdn.com/files/2a54264a-3bf8-45da-b60f-74757aab7e36/lifetime_portable_basketball_system_with_44_polycarbonate_backboard.pdf
    • https://uploads.strikinglycdn.com/files/a36b46cb-629f-4163-8a28-9e7407335855/my_dungeon_shook_letter_to_my_nephew_summary.pdf
    • https://uploads.strikinglycdn.com/files/36395425-f8ba-4a0c-816f-bc6d12e00724/5269808309.pdf
    • https://s3.amazonaws.com/jupevuxirapi/how_to_pick_cigar_size.pdf
    • https://s3.amazonaws.com/xuzakob/vishnu_sahasranamam_lyrics_sanskrit_documents.pdf
    • https://uploads.strikinglycdn.com/files/34aa4265-68ce-44b1-9aca-d33e76491d68/guide_to_getting_it_on_unzipped_book.pdf
    • https://s3.amazonaws.com/rolefosiju/irregular_verbs_worksheet_6th_grade.pdf
    • https://s3.amazonaws.com/resisuna/95397183866.pdf