Malicious PDF — malware analysis report

Static analysis result for SHA-256 add4429a5d849209…

MALICIOUS

PDF

73.3 KB Created: 2020-11-26 04:40:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 915b19563b6aac6b7711382d886f4e7a SHA-1: 14518607710e110ca752606dcc884874445a23ad SHA-256: add4429a5d8492094c48063bed596b59044b853f7e98f0a68d1940e4fea692f1
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a phishing site disguised as a game. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. No scripts were extracted, but the presence of a malicious URL is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/strik?utm_term=preference+card+game
    • https://cdn-cms.f-static.net/uploads/4454665/normal_5fae1fb4d1002.pdf
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f8a14acf2a19.pdf
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f8bcc04f3ad9.pdf
    • https://sokegipamemaxo.weebly.com/uploads/1/3/4/3/134345901/sakevaba.pdf
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/jobajelilela-fikisivonim-sujuzu-dewajozexazaju.pdf
    • https://raboxodibol.weebly.com/uploads/1/3/4/0/134096122/bezebazaxogatep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/4feb9237-b367-4568-985a-9c2b1b24a66f/kanixadotidejigevixuk.pdf
    • https://s3.amazonaws.com/vokeri/mossberg_mvp_patrol_stock.pdf
    • https://s3.amazonaws.com/gupuso/nebojoluzu.pdf
    • https://uploads.strikinglycdn.com/files/ba7a4e54-10ab-4a9c-bc31-06b7a81d8145/ryan_petersen_hockey.pdf
    • https://uploads.strikinglycdn.com/files/3a3a39d7-d06b-4de6-94b5-a013fbee4732/76592442329.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7b2.bin
260f9d8e5d8f8041cab208f2ac2219a07d49281c7cac0191b119ee27d31192c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B2 4684 bytes
font_01_sfnt_off0000e760.bin
9ae30333d62b268aa4b24b23b7591d6dce22fe22be244c75502ff33268107c1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE760 10356 bytes
font_02_sfnt_off00010a55.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A55 4324 bytes

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