Malicious PDF — malware analysis report

Static analysis result for SHA-256 29713bb7769ea267…

MALICIOUS

PDF

72.9 KB Created: 2021-03-28 13:27:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1544b4da11094cadbd546ef11a1c5063 SHA-1: be55992207b546013e69853f2bc018628c878bf6 SHA-256: 29713bb7769ea2673a41b433f02919f5317d09284d639b74c71b76c7c7ff99e1
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, and ClamAV detected it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to legal codes. The presence of embedded URLs and the ML classifier's high confidence suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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=what+is+the+texas+health+and+safety+code
    • https://static.s123-cdn-static.com/uploads/4447466/normal_5ff2258ddb822.pdf
    • http://jawazapefaxuzit.mywebcommunity.org/20398890802.pdf
    • https://cdn-cms.f-static.net/uploads/4424689/normal_600a94a5129bd.pdf
    • http://desokore.medianewsonline.com/sketchbook_brushes_free_download.pdf
    • https://static.s123-cdn-static.com/uploads/4407994/normal_5ff7960a1971e.pdf
    • http://legujepug.22web.org/autotable_jspdf_cdn.pdf
    • https://cdn-cms.f-static.net/uploads/4403680/normal_5fda0dfcc19fb.pdf
    • https://static.s123-cdn-static.com/uploads/4419626/normal_5fe02b6bea585.pdf
    • http://saroforati.medianewsonline.com/dedineko.pdf
    • https://static.s123-cdn-static.com/uploads/4382639/normal_6006242448228.pdf
    • https://cdn-cms.f-static.net/uploads/4459630/normal_60604eee2653e.pdf
    • https://cdn-cms.f-static.net/uploads/4371786/normal_5fd83ff60a5e4.pdf
    • http://fesunasisodenod.getenjoyment.net/42073400308.pdf
    • http://fegivate.medianewsonline.com/acid_base_and_electrolyte_chemistry.pdf
    • http://buwovavozu.getenjoyment.net/8586736722.pdf
    • http://vutunema.mypressonline.com/walmart_tv_65_inch_stand.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://misuxuji.rf.gd/pokemon_x_y_strategy_guide.pdf
    • https://s3.amazonaws.com/gizonukorad/an_introduction_to_essential_algebraic_structures.pdf
    • http://bilunet.rf.gd/waweselajenezikikukumadu.pdf
    • http://zenowalu.rf.gd/camera_raw_filter_11._3_free.pdf
    • http://rafesule.rf.gd/dolefa.pdf
    • http://leparitupoxow.onlinewebshop.net/android_tutorial_tutorials_point.pdf
    • https://s3.amazonaws.com/gogunabones/polidigililemojudorow.pdf
    • http://mojogoralil.onlinewebshop.net/g_shock_rangeman_gpr_b1000_strap.pdf
    • https://s3.amazonaws.com/kexamoxusinixu/alcatel_one_touch_flip_phone_a206g_manual.pdf
    • https://s3.amazonaws.com/pujirageg/39670755943.pdf
    • http://xogaduzop.atwebpages.com/scope_and_functions_of_wto.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_off0000df71.bin
86ac504748b1d25367a79763cc514d07dffccee32bbb583ad34d458ce2c7a968		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF71 5196 bytes
font_01_sfnt_off0000f137.bin
d935d6bf80905990857698fb7852de3931853c605403a991bc76e596b1676285		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF137 10676 bytes

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