Malicious PDF — malware analysis report

Static analysis result for SHA-256 e33074b37d83bf02…

MALICIOUS

PDF

147.0 KB Created: 2021-03-18 15:20:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 7ddca0a7111729e7319a9171e7524bd3 SHA-1: 86d81d6f8f7af45f735141f473a1061c22298f6e SHA-256: e33074b37d83bf02a1e2e3abb0c9c85c136c3ea0c2125f4b31ae04b6a2820cfb
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are indicative of a link farm designed to obscure malicious destinations. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9649

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://dugedepap.ru/award?keyword=bwssb+merit+list+2020+pdf PDF link annotation
    • http://sfr-espace.best/bawivujegodebalopipwd8nf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_6042c1cd20efe.pdfIn PDF document text
    • http://mscredit.info/morfosintaxis_funciones_de_las_palabrasujuhn.pdfIn PDF document text
    • https://cdn.sqhk.co/lifupowaseli/fMKheQk/psd_website_mockup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443372/normal_5ff8ed55e151c.pdfIn PDF document text
    • http://betflixguvenilirmi.com/popakijakasuxuwudibwtqrq.pdfIn PDF document text
    • http://samewejasaka.iblogger.org/5242796020.pdfIn PDF document text
    • https://cdn.sqhk.co/runudori/hdiaiiK/mynba2k20_app_waiting_on_network.pdfIn PDF document text
    • http://vijuziruzunubiz.iblogger.org/new_fonts_for_photoshop.pdfIn PDF document text
    • http://kungfumalibu.com/221418557391oeyd.pdfIn PDF document text
    • http://tixshopclub.fun/death_parade_end_explainedf21bh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476126/normal_5fcc739ce7e88.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bibubojudij.rf.gd/a_christmas_prince_full_movie_dailymotion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42e70ac2-f0a0-409c-bb57-e0780dc500d4/13183956367.pdfIn PDF document text
    • http://togujekunigek.rf.gd/bazasuwezotevu.pdfIn PDF document text
    • http://dizibabazuvuxu.rf.gd/73783453076.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a62e901e-adf8-49a1-9b77-867b5cdbf1a7/40646613640.pdfIn PDF document text
    • http://bawokexumavi.epizy.com/kupiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e694a950-0088-4c28-b9d0-4ac8010839be/graco_silhouette_swing_battery_compartment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e61c9b06-65d4-4851-99b2-38034ce65b47/mirusozexumiviruxes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30725579-82b9-4ca8-ae26-a4ab5b171c06/is_gravity_affected_by_time.pdfIn PDF document text
    • http://ninonasoligu.rf.gd/how_to_put_on_bob_weather_shield.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002227d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2227D 5532 bytes
SHA-256: 472a9839990a966ada7faa8bad058aad833e0ddaf5d193f25625706a49115cd4

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