Malicious PDF — malware analysis report

Static analysis result for SHA-256 64ace7714327f786…

MALICIOUS

PDF

57.6 KB Created: 2021-03-13 16:28:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f91086015927a68e57487f5037fe2cea SHA-1: 3389c0a3d435c642216883e42e2be90901f99249 SHA-256: 64ace7714327f7865514de5cf6564344c6558d9b1d029fa48fc0caf454f54d08
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external URIs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier's high confidence further indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to appliance troubleshooting, aiming to trick users into visiting the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5491

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://midufefew.ru/aws?utm_term=what+does+it+mean+when+your+washer+says+f PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417534/normal_5fcc5f4d726b3.pdfIn PDF document text
    • http://vzruvayarttraff.xyz/47931927367a1da0.pdfIn PDF document text
    • http://krokoboko6.xyz/how_to_clean_ink_cartridge_hp_photosmart_7520hn8k2.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/aW2jcgh/nafatumab.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/MJiegeS/6771561805.pdfIn PDF document text
    • https://cdn.sqhk.co/kolusugego/3jbhggw/86501282377.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367656/normal_5ffec179e58d3.pdfIn PDF document text
    • http://vertigoa.online/welakazufazuzalaxonaw6d.pdfIn PDF document text
    • https://cdn.sqhk.co/zakikola/5tighc1/baneveraxujevowuma.pdfIn PDF document text
    • http://d2-club.ru/874102845113v49d.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/jdhjArg/amc_ahmedabad_corona_positive_list_today.pdfIn PDF document text
    • http://presalon.xyz/69357389279adj7a.pdfIn PDF document text
    • https://cdn.sqhk.co/fovulifavu/gcHhcPX/amazon_used_women_s_golf_clubs.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/fujifilm_xp70_review.pdfIn PDF document text
    • http://dugarudewemudo.sportsontheweb.net/jepesodipes.pdfIn PDF document text
    • http://xifasiv.getenjoyment.net/convert_kindle_to_online_free.pdfIn PDF document text
    • http://xunopapazugatar.medianewsonline.com/como_sacar_la_molaridad_de_una_solucion_acuosa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366666/normal_5fca45b7073c0.pdfIn PDF document text
    • https://cdn.sqhk.co/xorilulog/fLhibjj/xozot.pdfIn PDF document text
    • http://goossyy.online/ark_breeding_mutations_guideii6em.pdfIn PDF document text
    • http://ketrovk.xyz/kewokojaverikiwelaimktd.pdfIn PDF document text
    • http://fakts.design/60984410208lx1iq.pdfIn PDF document text
    • https://cdn.sqhk.co/fupupusamun/iggfhiK/22667661781.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/6-6_skills_practice_trapezoids_and_kites_answers_with_work.pdfIn PDF document text

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