Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a03c3df17805c1…

MALICIOUS

PDF

77.8 KB Created: 2021-04-20 14:20:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12ce93809bfa3658007057c9ca5befe7 SHA-1: 59355b3d279941ffe16c4b5954c91ffc72eefb0e SHA-256: e2a03c3df17805c107272e4c73993a5be8cbd14e27d14d11bdd194aeee85f7ba
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, mezovuduw.ru, which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body, though heavily obfuscated, contains text related to a product name, suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://mezovuduw.ru/strik?utm_term=logitech+m557+bluetooth+mouse+price
    • http://nodebefituju.iblogger.org/kriteria_diagnosis_osteoporosis.pdf
    • https://cdn-cms.f-static.net/uploads/4381091/normal_5fd8372fb9bc3.pdf
    • http://tugesajudefuk.iblogger.org/how_to_get_an_instant_payday_loan.pdf
    • https://cdn-cms.f-static.net/uploads/4412391/normal_6024c2735cb54.pdf
    • https://cdn-cms.f-static.net/uploads/4424025/normal_60367833b9d76.pdf
    • https://cdn-cms.f-static.net/uploads/4488329/normal_604957b7affd9.pdf
    • http://meletemobu.iblogger.org/new_bollywood_albums_2018.pdf
    • http://pupalara.22web.org/lafetajiv.pdf
    • https://cdn-cms.f-static.net/uploads/4405644/normal_606864f5ea90b.pdf
    • https://static.s123-cdn-static.com/uploads/4366400/normal_5fce5c2448edd.pdf
    • https://static.s123-cdn-static.com/uploads/4388416/normal_5ff4d29dc9042.pdf
    • https://cdn-cms.f-static.net/uploads/4503035/normal_606e25276c232.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/bidemewufa/tubixuvar.pdf
    • https://s3.amazonaws.com/sinamozagemoger/siliresefadedoritefofe.pdf
    • https://s3.amazonaws.com/lulelepese/61940214214.pdf
    • https://8dfd47f4-e591-4377-92a3-bdbf91d41e5a.filesusr.com/ugd/a58b01_a2fbe2ca9fb747328c6a9cd6903a0288.pdf?index=true
    • https://s3.amazonaws.com/fazujo/how_to_add_transmission_fluid_to_a_2005_vw_beetle.pdf
    • https://s3.amazonaws.com/jigezilor/asus_rt-ac68u_dd-wrt.pdf
    • https://35b1a599-9f45-4897-82ce-59a931fc5495.filesusr.com/ugd/daca0d_6fa0c83fbd06485c9f2e9013e0979933.pdf?index=true
    • http://tokipobobanokab.rf.gd/19210064794.pdf
    • https://s3.amazonaws.com/luxelula/pasubiluba.pdf
    • https://s3.amazonaws.com/lorerexeg/cold_cathode_fluorescent_lamp_inverter_transformers.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_off0000e2ad.bin
17dca558f2324d68d34805e62b2bde1fee93796a06be1f25f00ca3598573e66a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AD 5196 bytes
font_01_sfnt_off0000f477.bin
926e274051daa3293bf8861f8250929a46c914e8784621a36eb22827e871cc47		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF477 11228 bytes
font_02_sfnt_off00011afb.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AFB 4324 bytes

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