Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e90e166d1d1037c…

MALICIOUS

PDF

75.3 KB Created: 2021-03-14 13:16:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19bc7ef813389740efcb737be55cc5c1 SHA-1: fc5a7574dcf89ac05ab6ac72c66a1df564035b70 SHA-256: 1e90e166d1d1037cd86f2e48335b8804f39470e4cd0f4969a3db666c77df6dcf
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable domains and flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9722

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://baarspo.ru/strik?utm_term=que+es+el+problema+de+investigacion+segun+sampieri
    • http://kmikaerfs.ru/carbons_golden_malted_waffle_maker_instructionsifn9w.pdf
    • https://karaxofuko.weebly.com/uploads/1/3/5/3/135344752/lufiju.pdf
    • http://kowuterada.mygamesonline.org/zolisa.pdf
    • http://ziwusis.getenjoyment.net/how_long_to_truly_love_someone.pdf
    • http://iuts.space/jadomenitixizames6g63.pdf
    • http://kapovulup.mywebcommunity.org/google_maps_florida_city.pdf
    • https://zokibiruxe.weebly.com/uploads/1/3/5/3/135326092/ec9d86e78c.pdf
    • http://tifoxikutawe.sportsontheweb.net/10630054049.pdf
    • http://zegererevez.medianewsonline.com/tagugugulobakajopidigavap.pdf
    • http://lifeshop.pro/mfj_993b_tunerw4k8a.pdf
    • http://jesibijifinuz.mywebcommunity.org/what_is_supply_chain_management_and_why_is_it_important_in_hindi.pdf
    • http://gtmedis.com/tecknet_keyboard_and_mousea0reg.pdf
    • https://geziduvugizi.weebly.com/uploads/1/3/4/8/134862990/vitijuzu.pdf
    • https://disemorabegelam.weebly.com/uploads/1/3/1/3/131383982/a7f97ec6420d5d5.pdf
    • http://nununad.myartsonline.com/how_does_god_reveal_his_plan_to_us.pdf
    • http://zutugidod.onlinewebshop.net/jeronovopav.pdf
    • https://s3.amazonaws.com/posaxugidut/fukubapulage.pdf
    • https://s3.amazonaws.com/takebemanijewok/saudi_arabia_audio_songs.pdf

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