Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c85665cc4dbf44…

MALICIOUS

PDF

68.9 KB Created: 2020-12-17 23:29:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-05
MD5: cef6e4a6da638439e955d1fa22d016fb SHA-1: 449f4eff2225aa3c7e39f2303ca412419301c60b SHA-256: f0c85665cc4dbf44fd2576e4e48a097dd8ea92332dcac8f1ff845926121be52d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://cdn-cms.f-static.net/uploads/4369308/normal_5fa1bc637a09c.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376105/normal_5f8b1c7dbdc7b.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/apc_back_ups_es_700_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/baby_love_couple_hd_images.pdfIn PDF document text
    • https://traffking.ru/strik?utm_term=area+model+multiplication+4th+grade+worksheetIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000cf50.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000cf50.bin)
    • https://uploads.strikinglycdn.com/files/aa491a06-2414-40ae-b904-61cbbc9797cd/road_rash_pc_download_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/359265a0-8d38-404f-9b39-aeb0059a7a2e/cuales_son_las_fuentes_secundarias.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce6fa92088997336171c3a/t/5fd66f33267c8d0ace49065b/1607888691957/gakavidumakoriw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4c8818e72e5fdbcdf5bd/1606372492749/ar_15_cleaning_kit_academy.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc572e82cf09257bd8a3d2d/t/5fd1f08fb1f69267715ab2a2/1607594128037/movesitematurak.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56f9017e7202640089847/t/5fcccbefeb18547f4b82907d/1607257075250/game_taxi_sim_2016_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a73ea62-0e13-4b00-acf2-960baa146083/vabebegubisaroxatibidab.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6453512facd59ced19c35/t/5fccc17283d2ac65cc10e366/1607254386648/61924950455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8da401bd-32b4-4384-9038-94ae723a71ce/rejepuxotubag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/142abedd-d29f-421e-bb3e-893c594b5902/79654363863.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off0000cf50.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF50 5720 bytes
SHA-256: ce101fd09f39d238d15e54cc20f776460ee79dfc06cea521c702db05f09a706e
font_01_sfnt_off0000e2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B1 10580 bytes
SHA-256: a70803ff304d686de7dbf3cf28621af74a85db91c578f39c3491c544c4657f14