Malicious PDF — malware analysis report

Static analysis result for SHA-256 32fe78d49da6ceb4…

MALICIOUS

PDF

78.1 KB Created: 2021-04-07 06:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 686edb99a21d30a3f5185c2e64bb333c SHA-1: 56d901bfe8c1731f07cf7302bc60c9541adb5a18 SHA-256: 32fe78d49da6ceb4acc7bcc93131b387f1ae4fb7a816504f0779808d7a3330a0
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL leading to a phishing site disguised as a graphics driver uninstaller. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/123?utm_term=graphics+driver+uninstaller
    • https://cdn.sqhk.co/sumefixes/tgjjbij/galactic_attack_alien_shooter.pdf
    • https://cdn.sqhk.co/botonerepap/khbijAS/how_to_draw_super_easy_superheroes.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/448758c1-2499-4afb-8f3a-fae11fd01beb/formato_de_solicitud_de_empleo_para_rellenar_word.pdf
    • https://7fca5364-97a1-4441-b76e-d2c429a59218.filesusr.com/ugd/735424_c1198d90fef5434fb795976d35340c26.pdf?index=true
    • https://c0cead0d-5248-483d-940e-95cc3acd9bde.filesusr.com/ugd/20d83a_50d97324b2f84576b496dbd28cdb4561.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b2d63a53-6ce3-4cfa-bc49-22c190bc4925/liduvidifawaxo.pdf
    • https://uploads.strikinglycdn.com/files/620d84c5-abb0-4846-befb-713f7efc08b6/defensive_driver_post_test_answers.pdf
    • https://uploads.strikinglycdn.com/files/4e60ff63-3155-4720-a5b7-02e8cc410d20/17362875164.pdf
    • https://uploads.strikinglycdn.com/files/361010e6-7299-4e13-bf06-ec6eb32a4b76/how_long_does_it_take_to_get_a_divorce_certificate_in_south_africa.pdf
    • https://uploads.strikinglycdn.com/files/a5af7373-eccf-4b53-963c-be39c6fa8713/stone_soup_cafe_walla_walla_menu.pdf
    • https://uploads.strikinglycdn.com/files/6efe5d38-1534-404c-86aa-568b87f5ceef/microsoft_office_table_of_contents_tutorial.pdf
    • https://24451074-f53b-4065-993c-779ba3957988.filesusr.com/ugd/0ae25f_195ca193535b4916ae1a3c24d9fab4ad.pdf?index=true
    • https://288dffde-0386-48bd-adba-b069b5f3b70f.filesusr.com/ugd/7e1b39_338fe478cf69412d895fb206723ba849.pdf?index=true
    • https://275320ff-96dd-455a-9699-a0fdc58b27a5.filesusr.com/ugd/943725_039e188648e74ed08d548199abcde4c2.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1423e426-c856-4703-ab7e-8b71f651dd79/gelisanekifir.pdf
    • https://eae964be-cf9f-49a8-9b2f-00020d526acb.filesusr.com/ugd/e932cf_f485869fd45349848e2f48ed430c4b5c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c0fc27b3-7013-493b-a4a4-d6ae4be16d70/project_manager_pay_scale_in_india.pdf
    • https://a0f1d9c0-ea46-4e0e-9383-d87711d3127f.filesusr.com/ugd/1e3fb7_4c60ffcb165b45ae953eaa1feb7d0c60.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a3eec100-862d-4954-8b9c-f47115451836/what_is_another_word_for_works_together.pdf
    • https://uploads.strikinglycdn.com/files/7bdf13a0-781d-406f-b47d-f35cbf689f11/2004_ford_focus_wagon_ztw.pdf
    • https://uploads.strikinglycdn.com/files/8c92542f-b076-4e56-b720-e4462dc479b6/wretched_of_the_earth_preface_summary.pdf
    • https://b01cffea-7a05-49e8-9781-04202a21c04b.filesusr.com/ugd/d5d855_ac9e3bc506a24f208a7702a2055a92bd.pdf?index=true
    • 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_off0000f518.bin
f4b94789de334336640b0ba598bf186511ab0e60677d8e1b01628d27850dc352		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF518 5252 bytes
font_01_sfnt_off000106f3.bin
a3eb07f1c3cd24d2dc81ba86ed7053a6d41c7f56ce24a43a981eb9bcb2110c65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106F3 10680 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.