Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce819a2d04c353be…

MALICIOUS

PDF

75.3 KB Created: 2020-12-24 22:08:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce539080ed99e7121f3ee83f23e9f9d7 SHA-1: dd49ffea1d1d948d315d0542709b05b8bb38fba2 SHA-256: ce819a2d04c353bea2a031eb1cd63c9c84e90f8e585379f9bc6f6d9cb43b938b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains obfuscated text and an embedded URL. The ML classifier and ClamAV detection strongly indicate maliciousness. The primary URL points to a resource that appears to be a lure for downloading resume templates, likely a phishing or malware distribution tactic.

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://trafficel.ru/aws?utm_term=free+professional+resume+templates+microsoft+word
    • https://cdn.sqhk.co/papusabefo/8rhdjcw/30213737138.pdf
    • https://static.s123-cdn-static.com/uploads/4421780/normal_5fcae93451cfa.pdf
    • https://cdn.sqhk.co/rogotojuseb/cPghggN/twd_supply_drop_stickers.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9349edb6-6886-433c-87f6-3e9d3ae6b528/womixew.pdf
    • https://uploads.strikinglycdn.com/files/9237a3c3-26e2-4e37-bc7b-8b530a076ef6/73688113694.pdf
    • https://uploads.strikinglycdn.com/files/29908dfe-9284-4a1f-8020-8560e3ffdd0a/3-13_card_game_origin.pdf
    • https://uploads.strikinglycdn.com/files/f3a9f136-f6bb-45c9-9472-a20d91bd1edb/26022390313.pdf
    • https://uploads.strikinglycdn.com/files/91ea3f9f-23f9-47b9-84b2-2523544f439a/sediwuzit.pdf
    • https://uploads.strikinglycdn.com/files/d302bd40-e4d8-49a2-9b7f-929b16396269/88129923135.pdf
    • https://uploads.strikinglycdn.com/files/be2768e0-26f5-4125-9554-4eeaf30eb36d/madinadimodojuwe.pdf
    • https://uploads.strikinglycdn.com/files/c065f53e-2e56-4bc8-aac9-9fa3587a34ab/41443707461.pdf
    • https://uploads.strikinglycdn.com/files/44251e49-6221-471e-acc3-6cd71fe56400/53526775077.pdf
    • https://uploads.strikinglycdn.com/files/ecbe1fb1-131d-4eea-a6a3-820e415c18cb/kiwomorujerusovonewor.pdf
    • https://s3.amazonaws.com/jadere/banished_mods_cz.pdf
    • https://uploads.strikinglycdn.com/files/5433e496-d0da-4aed-a889-1c52273a08cf/gozed.pdf
    • https://s3.amazonaws.com/mejifavo/xenuxalizawojegux.pdf
    • https://uploads.strikinglycdn.com/files/eb862aff-d066-41dc-b948-9480f9b38530/hometown_boys_wrestling_league.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_off0000e9ed.bin
bd374ae3e967cd6cf8eabef3e9d848c725f666fdfbde4221d12f7e4556d0d3df
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9ED 5348 bytes
font_01_sfnt_off0000fc1c.bin
e37a7111c1461c3a20a637e3adb5735f34765e7a79e145823523e563bb7e0220
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1C 10668 bytes