Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf4d1170ca5ff1e9…

MALICIOUS

PDF

69.9 KB Created: 2020-11-11 02:53:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1ae1ad6063422d79f2208de1b0c759a SHA-1: 51ac89f9829df03be3988a149772fd09f67539df SHA-256: cf4d1170ca5ff1e9d042f5d62b8c8abc0e0a4cf2a01c88f2590ba7bad503fb60
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, with a high risk score. It contains an embedded URL pointing to 'traffking.ru', which is suspicious and likely part of a phishing or scam attempt. The document body, though heavily obfuscated, contains keywords that may be used to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffking.ru/123?keyword=benwood+auto+parts+amazon
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/kavitokolezub/gepemojawi.pdf
    • https://uploads.strikinglycdn.com/files/9b4971cb-8fcd-47fc-9d1f-e67da4dd2883/41383428002.pdf
    • https://s3.amazonaws.com/xarojapi/bikomaganapuvek.pdf
    • https://uploads.strikinglycdn.com/files/360ae21a-a16e-46d0-afbd-c0b8a384d4dd/rasabutefena.pdf
    • https://uploads.strikinglycdn.com/files/44c3c570-3606-4a71-a4d6-218635fe8034/easy_graviton_lance_catalyst_farm.pdf
    • https://s3.amazonaws.com/midaguvimabof/57276418413.pdf
    • https://s3.amazonaws.com/julaxel/ancient_origins_card_list.pdf
    • https://s3.amazonaws.com/takebemanijewok/21360242038.pdf
    • https://uploads.strikinglycdn.com/files/a1eb906c-1cf8-4da3-ba94-317e30a8108a/wonder_pets_save_the_duckling.pdf
    • https://uploads.strikinglycdn.com/files/a2b66aa7-781e-44d1-9abc-95f208236eb7/how_do_i_reset_my_icloud_password_on_my_mac.pdf
    • https://uploads.strikinglycdn.com/files/bf13d283-e20e-4993-814a-a603e1254c1c/silusokakubajelutase.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_off0000c8cf.bin
d40ca05d8e5a5cde96ef9f8eb4911d36e1dfe8f2810372ef59bbccbc38146ebc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8CF 5100 bytes
font_01_sfnt_off0000da1b.bin
184140fc151919b8c6aa42ca683aead94840e6b55e4df013cbf0686a1a05bdc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1B 10144 bytes
font_02_sfnt_off0000fccd.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCD 4324 bytes

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