Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d9107599e0ef4b…

MALICIOUS

PDF

76.1 KB Created: 2021-03-15 09:19:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68a19f0f3369b0c85bdcb1e57ca34628 SHA-1: e29119aace50129e88b0bb037808d0ec0b6bbe45 SHA-256: 40d9107599e0ef4beee579fadee56bb7738ee11c245fbff71b4f1a8fc30427bc
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of external URIs suggests an attempt to redirect the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://resalured.ru/strik?utm_term=nordictrack+c2150+price
    • https://static.s123-cdn-static.com/uploads/4467298/normal_5ff7b502a29ec.pdf
    • http://nariwunuzaw.scienceontheweb.net/walt_disney_world_park_maps.pdf
    • https://cdn-cms.f-static.net/uploads/4464707/normal_60286a4f36ced.pdf
    • http://jusapp.club/105809527873423c.pdf
    • http://spacexfoundation.net/what_is_derivational_affixexbw9.pdf
    • https://static.s123-cdn-static.com/uploads/4413346/normal_6000f5681ec3f.pdf
    • https://cdn.sqhk.co/supopareso/2jhPr0s/pisomaxirajezidupif.pdf
    • http://itayoga.space/what_is_the_structure_difference_between_dna_and_rna_brainlyi33nt.pdf
    • https://cdn-cms.f-static.net/uploads/4408176/normal_600c11744e5de.pdf
    • http://dupigetibulira.iblogger.org/47547050691.pdf
    • http://vvinorama.website/xofevapofidemosaliloguzug913sw.pdf
    • https://cdn.sqhk.co/vixukose/bde2jeJ/molojipedimasefujiwetilab.pdf
    • http://dikagowoxi.sportsontheweb.net/11916331940.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/236e738f-3d63-4a64-ad86-348aca9bdfb2/why_is_once_upon_a_time_used_in_fairy_tales.pdf
    • http://pusuvolaxoxifun.rf.gd/tepojotu.pdf
    • https://uploads.strikinglycdn.com/files/4896ac64-625c-4e85-83c3-ddf43bbce5e5/47349063611.pdf
    • http://sasukagisodubex.onlinewebshop.net/85755281902.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_off0000e84d.bin
53af562b5ec7c3ab9de1b1c27c28e827fdba74484e21a30b907e2d32d2913d1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE84D 5340 bytes
font_01_sfnt_off0000fa94.bin
ba14a04f99cc08543c4eac9f29b66dc3749975c28237240437e8f9f8614c6c70		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA94 11712 bytes

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