Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe3ab40daa3a1db4…

MALICIOUS

PDF

73.3 KB Created: 2021-04-29 23:14:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a51ced1afb082d496c9b909ca16bf42 SHA-1: d09540f3144367cf38527fc9300f377d2540b73f SHA-256: fe3ab40daa3a1db491989bcb5026925a062da5e81c65109f560bea7b7dec692c
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, indicating a high likelihood of malicious intent. It contains an external URI pointing to a suspicious domain, likely intended to host phishing content or a further payload. The document body, though heavily obfuscated, appears to be a lure related to 'Berserk manga plot twist', aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/strik?utm_term=berserk+manga+plot+twist
    • http://kersita.space/char_broil_big_easy_recipes_pork_shoulder22idg.pdf
    • https://static.s123-cdn-static.com/uploads/4365660/normal_5fceff66c420d.pdf
    • http://gosepakaf.getenjoyment.net/magisterium_livro_4_download.pdf
    • http://lollipopa.online/ropofoxiffqx24.pdf
    • https://cdn-cms.f-static.net/uploads/4381962/normal_602f0d9dee3a5.pdf
    • http://mitutepoka.medianewsonline.com/ballistic_missile_defence.pdf
    • http://ginupedarokuxu.getenjoyment.net/maze_runner_cast_instagram_accounts.pdf
    • http://riragukigud.scienceontheweb.net/38596035453.pdf
    • http://zujewap.mygamesonline.org/calendrier_belge_2020.pdf
    • http://poverkavoda.website/frogger_retro_handheld_arcade_gamew674x.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/baxegezivumi/backtrack_5_image_for_android.pdf
    • http://regipikiwubadov.epizy.com/dragon_quest_ix_armamentalist_guide.pdf
    • http://jarunotaso.rf.gd/array_programs_in_java_with_output.pdf
    • http://luxupovokajaf.onlinewebshop.net/standard_costing_and_variance_analysis_formulas.pdf
    • https://s3.amazonaws.com/votawawo/20077201694.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_off0000e0b8.bin
8f05bc4c3d3db51fb84f8b791f51ba2112287268e54861bf22eccda75f12d4f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B8 5344 bytes
font_01_sfnt_off0000f2e4.bin
30cd7eaea522665dbd82f65017af977aa175419982a08151a1b2bcacd86799fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E4 11080 bytes

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