Malicious PDF — malware analysis report

Static analysis result for SHA-256 30cc2cdd549813f0…

MALICIOUS

PDF

85.1 KB Created: 2021-03-12 15:02:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07e244cad4d74aebc73548a432192366 SHA-1: 9c1da9b61437f2d2c2e04bccf582b6bfac6e8b47 SHA-256: 30cc2cdd549813f0acf3f13129c24d305e44ab9e477f5fda484f21cf0993e673
96 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and the ML classifier also indicated a high probability of maliciousness. It contains an embedded URI pointing to 'https://mezovuduw.ru/award?keyword=acetilcisteina+xarope+pediatrico+bula+pdf', suggesting a phishing or credential harvesting attempt. The document body, though heavily obfuscated, appears to contain keywords related to the URL, reinforcing the 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://mezovuduw.ru/award?keyword=acetilcisteina+xarope+pediatrico+bula+pdf
    • http://jufimeja.iblogger.org/93695877340.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gidobiladuk.rf.gd/51451812750.pdf
    • https://uploads.strikinglycdn.com/files/80e8009d-b2e0-491b-ba1e-f0775322b2e2/fifty_shades_of_black_trailer_english.pdf
    • http://rafazusasune.rf.gd/origin_and_spread_of_islam_in_west_africa.pdf
    • https://uploads.strikinglycdn.com/files/76e8a0f4-8db5-425a-9b33-c455a4a65bfc/what_intermolecular_forces_are_present_in_dimethyl_ether.pdf
    • https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_6bf1059bcd6a40f2b5a52dbc866b1788.pdf?index=true
    • https://uploads.strikinglycdn.com/files/10bf91ee-b678-4845-80c7-d894925eb3b6/todogonebegarobekenisuzub.pdf
    • https://uploads.strikinglycdn.com/files/9040178f-a479-43ce-a652-93e19269999e/jokiveboximuwugubol.pdf
    • http://zogonigabi.rf.gd/music_player_apk_samsung.pdf
    • https://bf68d742-fb98-404a-ab47-1dcf24f7df52.filesusr.com/ugd/83e7fd_ce18e49ea6a84a23bcb1ce9807e11b9d.pdf?index=true
    • https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_2142789c94884d419648226a75c5ab5e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ae93ca6d-870f-496c-b9cd-9bf2a503aeeb/red_mini_dachshund_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/2c118f01-8c05-4366-b08e-04b946abff30/the_mysterious_benedict_society_book_1.pdf
    • http://dusuwuf.rf.gd/2019_ktm_85_sx_service_manual.pdf
    • https://874c0fd6-92eb-497b-905f-dc7ca4d2e287.filesusr.com/ugd/5ca7d4_4ca719566ab1414c84a8dc8b03cc1522.pdf?index=true
    • https://6376acfe-5884-4251-b3d5-19a03c044549.filesusr.com/ugd/de3d83_2d7ee8c408c54c638fbb1bcd09e487f9.pdf?index=true
    • https://uploads.strikinglycdn.com/files/96b90388-fb5c-4727-9678-34015704826d/6628622839.pdf
    • http://noderisaxe.rf.gd/73069720667.pdf
    • http://silapopo.epizy.com/ethiopian_flight_crash_report.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_off0001081d.bin
4e539b750af35a24a6b35c7bb2acf62dc2bb4b00f9498e5eea3f5f1a68d1cad7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1081D 5348 bytes
font_01_sfnt_off00011a5d.bin
e1ab08ddca3ffd119ecd1646d5fc4cd6540f6de9f77deb4d77d9d16802a50c7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A5D 14128 bytes

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