Malicious PDF — malware analysis report

Static analysis result for SHA-256 93adf25d42895dd1…

MALICIOUS

PDF

78.4 KB Created: 2021-04-04 22:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 333acf5a6ae298414b95f987bb83384f SHA-1: 9886a82cffa5d17dfc2b0fc1de466022d4943e9f SHA-256: 93adf25d42895dd138a58c95d31af70ee5692a1524e7909eb92958c47bd282d7
96 Risk Score

Malware Insights

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

The file was detected as malicious by multiple engines, including ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://ponafet.ru/strik', which is likely a phishing or malware distribution lure. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://ponafet.ru/strik?utm_term=ti-34+multiview+tricks
    • http://rapegupuv.iblogger.org/politique_budgetaire.pdf
    • https://cdn.sqhk.co/puwukuwos/dK7Vjgl/pick_up_lines_in_spanish_translation.pdf
    • https://cdn.sqhk.co/nijusukelok/hdKphhD/95379100758.pdf
    • https://cdn.sqhk.co/gixotagokezu/VmJSjfL/tuvumunavipugawasoxa.pdf
    • http://silvanozito.online/format_code_notepadhzy1t.pdf
    • https://cdn.sqhk.co/komajekolino/fhgjajj/plants_vs_zombies_download_pc_windows_7.pdf
    • https://cdn.sqhk.co/wefonasifaza/oUkjcHO/app_vault_miui_12.pdf
    • http://world-wildshop.com/facebook_profile_photo_template0ef0j.pdf
    • http://cparta.moscow/505961638041ftq.pdf
    • http://tohld.in/pipovegirofifamoxewodes1h0xs.pdf
    • http://woberenususasop.iblogger.org/algarve_road_map.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tonubugiloroluv.rf.gd/bojekobenuvefuge.pdf
    • http://nuxizutize.rf.gd/braemar_shipping_services_annual_report.pdf
    • https://uploads.strikinglycdn.com/files/b6a1178b-be95-452a-a0cd-dc8ab10ae0f4/que_significa_tener_un_estilo_de_vida_saludable_segun_la_oms.pdf
    • https://uploads.strikinglycdn.com/files/a2651831-addf-4813-9e97-9d8a694730c5/kepojup.pdf
    • https://uploads.strikinglycdn.com/files/d7e161ff-9647-46f3-b456-0bf002187295/hamilton_beach_flexbrew_replacement_carafe_49983.pdf
    • http://moxutomib.rf.gd/xibowow.pdf
    • https://uploads.strikinglycdn.com/files/58651f87-2313-45f0-87ce-70ce38101ce5/6761779062.pdf
    • http://womejus.rf.gd/amitabh_bachchan_movies_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f22b.bin
dbfa5768d996d9af399b06a9e36190a92445f9c8024e7c5a243671d801e3d89f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF22B 5184 bytes
font_01_sfnt_off000103df.bin
4e93cb959ede3be212c940ff570da8fe9dfa3e8c9cc3246f699a136646687475
pdf-font-stream PDF embedded font (sfnt) at offset 0x103DF 12012 bytes