Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2bfae3396734e3e…

MALICIOUS

PDF

77.2 KB Created: 2021-03-27 10:07:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f5897afa09aeb955dc154c8fdf378885 SHA-1: bbf149ca258a64c46f0ef27b3344bec69e46470d SHA-256: a2bfae3396734e3e43295d24e03961eccd7efaa014279d2fe0dc9efe14204d42
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'golowaki.ru' suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of common phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://golowaki.ru/123?utm_term=blender+furniture+models
    • https://cdn-cms.f-static.net/uploads/4416513/normal_600c09578601d.pdf
    • http://lighterusb24.site/diablosport_i3_serial_numberwwuct.pdf
    • http://flash-sar.online/3750243685420448.pdf
    • http://martans.space/id_card_templates_free9nqhu.pdf
    • http://marifivelaj.mygamesonline.org/7209417911.pdf
    • http://kind-insta.site/ielts_band_9_readingxrhry.pdf
    • http://the-job.ru/hp_elitebook_8560p_maintenance_manual664ht.pdf
    • https://cdn-cms.f-static.net/uploads/4443602/normal_602a7dd27d787.pdf
    • http://bluhgang.best/best_20_gallon_air_compressor_for_the_moneyzneme.pdf
    • https://static.s123-cdn-static.com/uploads/4470537/normal_5fee20090d0ce.pdf
    • http://jemulobapamiwu.mywebcommunity.org/35838263829.pdf
    • http://yoganchik.space/vovikedifesupaxapipivutpsrgr.pdf
    • https://cdn-cms.f-static.net/uploads/4492281/normal_6023fe521ab1c.pdf
    • https://cdn-cms.f-static.net/uploads/4459796/normal_6030fa1fed1cd.pdf
    • http://faxusupovetek.sportsontheweb.net/83068919107.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/a21b42f5-21bf-4593-8928-3750dcf216c9/budenurekoxidilenawidokuv.pdf
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_53d08d48f6e54846b107856d3cad13f0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a9042ae6-ae35-432f-90db-22406281c8d4/aroma_rice_cooker_oven_safe.pdf
    • https://uploads.strikinglycdn.com/files/975febeb-ccdb-41ab-b3cb-00390392e51e/the_postman_always_rings_twice_full_movie_free_download.pdf
    • https://33b7cf8b-1cb2-46d9-9063-17e97cba5e80.filesusr.com/ugd/9edd50_28391730f2c543f3ae21036a27bc2ece.pdf?index=true
    • https://2ddc7431-ff91-46e9-9708-195efd6cc195.filesusr.com/ugd/ffe0d3_2b1e69ab90154a6d96ddd28256e20f53.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9e4ceb33-6cfb-4f6c-9ea6-00baa19a2beb/97250860376.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_off0000e50a.bin
58ced37ccac8980f5c9976566a353d1b7f83e1ca85a68ee817b797bc0dadc341		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE50A 4772 bytes
font_01_sfnt_off0000f528.bin
4d74908078c1f721a3badd35e9471aa35a4b9e22f9bcad40bfcdcb73231e7327		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF528 10684 bytes
font_02_sfnt_off00011952.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11952 4324 bytes

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