Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ad1847e957c4e70…

MALICIOUS

PDF

78.1 KB Created: 2021-03-20 05:56:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d31a1174d4de651b39f65fc4356ea35 SHA-1: 599a037868f4526ebafcebde4c02943a6a516388 SHA-256: 8ad1847e957c4e70aec4fbd7b018a5a44811550d5f193b162faa902dd4dc1ad1
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to product search terms, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://jumiwimov.ru/strik?utm_term=cuisinart+air+fryer+toaster+oven+pan+size
    • https://cdn.sqhk.co/medijamowole/javhc9f/vetofubevofa.pdf
    • https://cdn-cms.f-static.net/uploads/4500200/normal_601b19fe8195e.pdf
    • https://cdn-cms.f-static.net/uploads/4483854/normal_6032138aa42ea.pdf
    • http://luxomozuk.mypressonline.com/pepemaluzuniwarunufex.pdf
    • http://sebevifa.getenjoyment.net/design_and_analysis_of_computer_algorithm.pdf
    • https://cdn.sqhk.co/mefomixut/ZRGQajd/windows_movie_maker_online_free_no.pdf
    • https://cdn-cms.f-static.net/uploads/4496146/normal_6034efec43ca7.pdf
    • https://static.s123-cdn-static.com/uploads/4444882/normal_5fe28469a12fa.pdf
    • https://cdn.sqhk.co/kemivabesu/cjz3jgO/best_chocolate_brownie_recipes_uk.pdf
    • http://vopukisavenif.medianewsonline.com/rebujobafuzogabo.pdf
    • https://cdn.sqhk.co/busanurutar/W1OA5Sf/installer_stylist_heaven.pdf
    • https://cdn.sqhk.co/madufuxenuw/jaies1P/nasa_federal_credit_union_bank_near_me.pdf
    • https://cdn-cms.f-static.net/uploads/4425726/normal_6052d1fa4a838.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://e432c3f7-acc0-403b-bc7f-1b8c16782643.filesusr.com/ugd/6a4899_f5fab5863ecf438eaec09d25585bd1b8.pdf?index=true
    • http://jabodegodonirad.atwebpages.com/what_are_the_two_functions_of_the_fallopian_tubes.pdf
    • https://0fe83ef2-ed6b-4f04-a52d-31fe3c58d8d1.filesusr.com/ugd/ade4e6_100c23a6178a4ff8897451e9e22bf9c7.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4b31ce6f-a327-4cb9-ad2f-4b092240ce88/kusuxolegabuvepozipudejet.pdf
    • https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_f9493cde1efd4dda91017fce34f625ea.pdf?index=true
    • https://uploads.strikinglycdn.com/files/bae3c1c3-835c-444c-85e9-57f9ad25a1bc/68431054773.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_off0000f493.bin
5148b6eb9b173100d90a7a0c4af05eb3a79ea6fdde5e91d02913255997ec1bed
pdf-font-stream PDF embedded font (sfnt) at offset 0xF493 4980 bytes
font_01_sfnt_off000105a8.bin
877a2c1011f40b84d580f33ea08b0a80f21deed8b9445a7cb44c10fb9547fe57
pdf-font-stream PDF embedded font (sfnt) at offset 0x105A8 11032 bytes