Malicious PDF — malware analysis report

Static analysis result for SHA-256 89de5ca7ab21deda…

MALICIOUS

PDF

89.7 KB Created: 2021-03-22 00:13:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca33cf5118f3c9a282372446a5bc5075 SHA-1: bc286e632a777dc339537be0d46884ddd7e8ca69 SHA-256: 89de5ca7ab21deda9b2a0bdf984596338287991b0e2800eb75d2d13f014673af
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as Pdf.Phishing.Trojan. The presence of an external URI pointing to 'leonvi.ru' suggests an attempt to redirect the user to a potentially malicious site. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it is designed to exploit vulnerabilities or trick users into navigating to harmful URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/award?keyword=principles+and+applications+of+chromatography+pdf
    • http://latitekiwa.scienceontheweb.net/47409529492.pdf
    • http://lenuvivureropi.scienceontheweb.net/is_rca_remote_universal.pdf
    • http://fafuzum.sportsontheweb.net/gta_vice_city_game_cheats_download.pdf
    • http://giwewigipebi.medianewsonline.com/security_analysis_benjamin_graham.pdf
    • http://fidesuwuranotif.getenjoyment.net/84201314938.pdf
    • https://nepimofuniwud.weebly.com/uploads/1/3/4/5/134508881/mufotorokajanokuw.pdf
    • http://nemugub.mywebcommunity.org/49192120801.pdf
    • https://zewujinewototi.weebly.com/uploads/1/3/4/7/134749630/8b0b6.pdf
    • https://kototavuwo.weebly.com/uploads/1/3/4/6/134696015/rasugaved.pdf
    • http://wumomotetidofe.getenjoyment.net/hp_laserjet_3015_toner_replacement.pdf
    • http://kerutugizuxig.mygamesonline.org/metal_gear_solid_5_definitive_edition.pdf
    • https://lowexupunodod.weebly.com/uploads/1/3/4/8/134896298/lilijom-nupikow-nisezem.pdf
    • https://komiwafaka.weebly.com/uploads/1/3/2/7/132712661/9237228.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bemabam.myartsonline.com/gorijebuzekiweloti.pdf
    • https://uploads.strikinglycdn.com/files/d5a2843f-89da-47c4-bcff-ff96368e8394/nook_bntv600_update.pdf
    • https://uploads.strikinglycdn.com/files/75d725d2-a393-4cc6-9ea3-6d8d3fde820d/how_to_learn_arabic_basic.pdf
    • http://wokidomogu.onlinewebshop.net/61420152749.pdf
    • https://s3.amazonaws.com/tigewibejageju/tricky_sql_queries_interview_questions_and_answers.pdf
    • https://s3.amazonaws.com/sojebelevenex/bawafofanezoguvawikiki.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001089e.bin
59bb3bd25e8a24ce83d9af0cc555d6bcd3998498c2891e051502553b2db00c60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1089E 5672 bytes
font_01_sfnt_off00011bcc.bin
138c86df1138fcc1bdd24480f48ad8326f757a182211a73a84ff3b07c234d8c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BCC 10984 bytes
font_02_sfnt_off0001416a.bin
532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1416A 16204 bytes

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