Malicious PDF — malware analysis report

Static analysis result for SHA-256 90379514402bf489…

MALICIOUS

PDF

67.1 KB Created: 2020-12-25 18:58:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 98301cdc6274791efd68c8df5f236bff SHA-1: 4af20624596848b9e52ca75e89336d780635993e SHA-256: 90379514402bf4894182489b1c0586502583066f23102662faeb7f70c4f817bb
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'traffnew.ru', which is flagged as suspicious. The document body, though heavily obfuscated, contains text that appears to be a lure related to a 'sound button'. No scripts were extracted, but the presence of an external URI strongly suggests a phishing or malware delivery attempt.

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://traffnew.ru/strik?utm_term=oof+death+sound+button PDF link annotation
    • https://cdn.sqhk.co/kitaparek/idjdgeh/soropix.pdfIn PDF document text
    • https://cdn.sqhk.co/nutakurij/RKgeJd3/save_the_fish_game_free_online.pdfIn PDF document text
    • https://cdn.sqhk.co/gugapedulob/jhfT0gj/bibufoduk.pdfIn PDF document text
    • https://cdn.sqhk.co/jibenapola/HjcSp7a/parinomujaburejer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419650/normal_5fd825a3083a7.pdfIn PDF document text
    • https://cdn.sqhk.co/redixebu/lj1hgja/hamilton_rise_up_tour_shirt.pdfIn PDF document text
    • https://lifusapemar.weebly.com/uploads/1/3/4/5/134526201/0283805c815d456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402707/normal_5f9619090892a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xezonijida/77914574030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3d840f2-ef49-4abb-b1cc-e89caec33b61/letter_to_daughter_going_to_college_from_dad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c215a17-8f97-41f6-b8ca-bba79880c395/38701330716.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63808c7c-252e-4eee-b779-cbecd9c3ea98/32343866205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/227c37e8-d026-457a-a7a9-332c9401bfb6/st_louis_mugshots_63123.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 PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC686 5036 bytes
SHA-256: 099dd402282890fb71224a0316a562608a5f7bf6827a4e1130dbd429e1fdb982
font_01_sfnt_off0000d7a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A5 12288 bytes
SHA-256: b26ba68d8d83a289f9c21e9cb1a4d2144edbd043789824a448278cb466fb00a8