Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ebeb2d1f048539…

MALICIOUS

PDF

98.5 KB Created: 2021-04-03 19:04:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a011d0d0ff17ab409a8d4d17d72706c SHA-1: 296746a2a3713c5f2e545a126f515c6ab9161835 SHA-256: 75ebeb2d1f048539e41526e53f9c4ada8ea7b5b3272603b8d3d294ba9c2f7350
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, appears to contain text related to firearms, likely as a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://zajinet.ru/strik?utm_term=sig+sauer+p226+mk25+vs+glock+17
    • http://jabolemifagafu.22web.org/xogaz.pdf
    • https://static.s123-cdn-static.com/uploads/4381730/normal_5ff4ecac49e6d.pdf
    • http://my-favshop.online/puvekasuzotu84e4u.pdf
    • https://cdn-cms.f-static.net/uploads/4366628/normal_6063fed7785f2.pdf
    • http://silkhfig.bid/why_is_my_whirlpool_oven_not_heating_uphpfhj.pdf
    • https://cdn-cms.f-static.net/uploads/4461786/normal_60383e4905ce6.pdf
    • http://milanbeach.fun/bass_clarinet_sheet_music_freehxs7u.pdf
    • https://cdn-cms.f-static.net/uploads/4488316/normal_6067dfd78d61d.pdf
    • https://cdn-cms.f-static.net/uploads/4417670/normal_6056f08a91cf8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://beperedusewigu.epizy.com/66701216373.pdf
    • https://s3.amazonaws.com/zodawanuror/vodipoxeroliputur.pdf
    • http://xewaditina.epizy.com/zibed.pdf
    • https://s3.amazonaws.com/bagokiko/jacksonville_jaguars_injury_report_week_6.pdf
    • http://vovakupalujum.onlinewebshop.net/cms_ed_drug_list.pdf
    • https://s3.amazonaws.com/vibuvomomuv/anaphylaxis_guidelines_emergency_medicine.pdf
    • https://s3.amazonaws.com/lixuzo/82380697947.pdf
    • http://zuxulabawiba.rf.gd/55890312668.pdf
    • https://4e4301d6-cc9a-4939-960a-6b497c1efea6.filesusr.com/ugd/d78803_ebb7a6d3816041a8bee7cc6dd4986e2f.pdf?index=true
    • http://beliraguw.onlinewebshop.net/cool_female_st_bernard_names.pdf
    • https://s3.amazonaws.com/tupofelasujewas/57338176055.pdf
    • http://favutabaxur.rf.gd/9586972769.pdf
    • https://dda5c79a-a75d-44d9-a006-48dec3bfe172.filesusr.com/ugd/115d6e_ca0403e8bbfd4c159a75d8c74f07571c.pdf?index=true
    • 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_off000135eb.bin
ee6ad18b49c96989808c4425e146c8b09026b1dd1be3939c818bd2fe3ab40ede
pdf-font-stream PDF embedded font (sfnt) at offset 0x135EB 6020 bytes
font_01_sfnt_off00014a6b.bin
1a7f5f78b70f87c8c445655e3203414d5b72576ee703b7266533f1cd7478b213
pdf-font-stream PDF embedded font (sfnt) at offset 0x14A6B 1552 bytes
font_02_sfnt_off0001526f.bin
29fa0eb7b2926882ce65b458074e6896adb2f3d0d06505d3e4986f09709a9061
pdf-font-stream PDF embedded font (sfnt) at offset 0x1526F 11664 bytes