Malicious PDF — malware analysis report

Static analysis result for SHA-256 10a3ab92eebdff14…

MALICIOUS

PDF

70.0 KB Created: 2021-03-16 17:11:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abb3462027c7bb1214a6f5aa34aa2422 SHA-1: 2987464f89de4c0918200ade94e4a85ae7e070b0 SHA-256: 10a3ab92eebdff14d83e4182114f6a22cb00f3035355965c30c67118dc56271c
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains keywords related to a sale, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/strik?utm_term=husqvarna+460+rancher+sale
    • https://static.s123-cdn-static.com/uploads/4465007/normal_5fc9c290db65f.pdf
    • https://static.s123-cdn-static.com/uploads/4380527/normal_5fc8a962d95ee.pdf
    • https://cdn-cms.f-static.net/uploads/4470027/normal_5fd671fb9b7fe.pdf
    • https://cdn-cms.f-static.net/uploads/4475988/normal_602f72d8d0fd0.pdf
    • https://cdn-cms.f-static.net/uploads/4445879/normal_602eac51c0278.pdf
    • http://vizionsmc.net/good_guides_for_class_11_cbsedfgye.pdf
    • https://static.s123-cdn-static.com/uploads/4367680/normal_5ffa5b9ebab67.pdf
    • https://static.s123-cdn-static.com/uploads/4480383/normal_5fe0aef67a435.pdf
    • https://cdn-cms.f-static.net/uploads/4375507/normal_6023c7f5ed8c2.pdf
    • https://cdn-cms.f-static.net/uploads/4418783/normal_604d2c5ca43e3.pdf
    • http://lordtrans.ru/6._encyclopedia_of_chart_patterns_by_thomas_bulkowskia48fl.pdf
    • http://parhelifrl.space/41763954357rk884.pdf
    • http://dazenad.iblogger.org/19124445585.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pawubiba.epizy.com/55595370255.pdf
    • http://sefukapa.epizy.com/80874895453.pdf
    • https://uploads.strikinglycdn.com/files/3f56551e-e25a-4f05-8d3e-b00f40f5b359/philips_dvd_universal_remote_app.pdf
    • https://uploads.strikinglycdn.com/files/d10711cc-be8e-4e0f-b240-164955025169/bissell_powerforce_bagless_turbo_belt.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_off0000d45e.bin
3ce585a6f8788dbcddaf7b4182a212b30d72edd2da1c8da8ed841f124a471665		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD45E 5416 bytes
font_01_sfnt_off0000e6d3.bin
d4d8d8a452c3ddb560afebbe1e47582eb229e06338c999678d1aadda4acdecb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D3 10620 bytes

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