Malicious PDF — malware analysis report

Static analysis result for SHA-256 8535e2c2fc08f5ca…

MALICIOUS

PDF

58.6 KB Created: 2021-03-08 04:48:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3b0078eabfadc22ffc28bfe9188d6e3 SHA-1: 8c557c434b2bb6f0931b9142adbd6ec0d10c80ef SHA-256: 8535e2c2fc08f5ca1de3d3a89b09fb8a05449c0a0fe867fb827ba4087c7e020c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection to potentially malicious sites. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure indicate an attempt to direct users to external resources, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7380

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/aws?utm_term=avon+skin+so+soft+dry+oil+spray+reviews
    • https://cdn.sqhk.co/jarixizotib/eNBhdif/business_plan_sample_in_ethiopia.pdf
    • http://sepukolobu.sportsontheweb.net/how_to_prepare_for_cultural_interview.pdf
    • https://cdn.sqhk.co/nefakovuwot/g3hbAWX/planet_fitness_locations_in_phoenix_area.pdf
    • https://cdn.sqhk.co/misusulebix/5iaLje7/tuwigaw.pdf
    • https://cdn.sqhk.co/reriwoduriju/ie0hiha/vokomudiwepev.pdf
    • https://cdn.sqhk.co/posuwumujome/eqghor9/xugovedomagazanofosipu.pdf
    • http://suzofovolavuk.scienceontheweb.net/poxumuzodiguvataxovupubu.pdf
    • http://luxisulejoxo.getenjoyment.net/bless_me_ultima_sparknotes_chapter_2.pdf
    • https://cdn.sqhk.co/xuxozowaki/6gfrAja/gold_rush_lost_mines.pdf
    • http://juborekif.atwebpages.com/gamixosefakojumilaxip.pdf
    • http://guwaxilajoxeza.onlinewebshop.net/24310828545.pdf
    • http://solarujarinobo.myartsonline.com/how_to_use_the_singer_handheld_sewing_machine.pdf
    • https://uploads.strikinglycdn.com/files/75b0c18d-bfc6-40ac-8b2c-1c519f29c137/18906417202.pdf
    • http://pekafujojef.onlinewebshop.net/36196986978.pdf
    • https://e924225a-aa46-4bfc-8e56-7341551e1833.filesusr.com/ugd/54dfea_c8dff13dd18546a78e2d1b9458c92db0.pdf?index=true
    • https://ed59cdd8-0d75-4634-8bb2-7afdb9da103e.filesusr.com/ugd/9cb112_59b361eb329446349917673a644a46c4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f7899571-5883-4099-a4ac-6550308217f0/momo_michael_ende_movie.pdf
    • https://uploads.strikinglycdn.com/files/2ce7eaae-c1e1-4be6-8874-2e7fd4718c72/can_carbon_14_be_used_to_date_rocks.pdf

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