Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5da8435724a9c98…

MALICIOUS

PDF

70.1 KB Created: 2020-12-11 06:15:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-06
MD5: de68cb05d1b6c255516caaac9e45f5eb SHA-1: 02b94966a0189fafffaff47d4c8fe741d5ca1c56 SHA-256: b5da8435724a9c98ba713de857773393c006b953b5659c73745f7f3c250c7c53
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/4366375/normal_5fbb16409b090.pdf In PDF document text
    • https://ggtraff.ru/wb?keyword=airdroid%20for%20android%20freeIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c304.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c304.bin)
    • https://uploads.strikinglycdn.com/files/4901c157-3b7a-4ecf-b357-d6753e8ffd71/1329943080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8240cb65-ce56-4f74-8fc9-23ef71355d15/nanuet_train_station_revitalization.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fd4cf16-3661-44a0-8c80-7ae0cf53b5ee/thule_t2_classic_parts.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5072ec14dfd36fe0c117c/t/5fc9678404e7723ed2f8a249/1607034757303/anhydrous_dibasic_calcium_phosphate_solubility_in_water.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc141a05687f52b6b83892d/t/5fcc6d6933187724c4e9a22b/1607232873625/45912815250.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc790fbfc603311fbfb0c74/t/5fcd7f90c00f007ceaff0a1c/1607303057155/60663162727.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4dbb3f75b16643cb9434/1606372796198/vuvon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6485be2fce462bcb09523/t/5fce82e28ef3d30d34dca37b/1607369444212/rafune.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00874a5bc066edfa0f7a0/t/5fc1dec62dd96f59183321c4/1606540999053/roxy_theatre_camarillo_california.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5f041972c46e3c96558d/1606377221188/aluratek_abc01f_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53a0ec89e1c4b8fdafd1e/t/5fc6eb3a0791337046d5fbb5/1606871866559/torn_acl_surgery_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4617c9ca-eef3-4072-abfd-441b0d238212/vodoxofofefumadamuselorum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aebe35ed-4954-4b6e-be89-5ce67bfc1ccf/sinax.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17edd6609fd0ee7958e2c/t/5fcd85ced336b863f0da31a9/1607304655201/battle_tanks_game_unblocked.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c1ca2bbd74065805c248/t/5fc2654a3570fb44d1507335/1606575439600/triple_thick_glaze_hobby_lobby.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_off0000c304.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000f71f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000f71f.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC304 4680 bytes
SHA-256: 0f0b02653987790df89eded959a55c39bc644f42dfc8fc4b45202bffcd385f5b
font_01_sfnt_off0000d2fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FE 10532 bytes
SHA-256: 73214d3ed63dd9331dfe40e2eade97012e0773072f9e4533b0c6a3f1b2f5036b
font_02_sfnt_off0000f71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71F 16092 bytes
SHA-256: 0be84d2d0547f1f02aa0071b49020aaa73ac7e6a4c4dee27a4da8627c6f2d0ef