Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e0b8f10ba18a8d…

MALICIOUS

PDF

73.8 KB Created: 2021-02-14 06:43:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6decf7b0a4fad3d22a1708f684956dd7 SHA-1: e7d04a0e8b0ec6928c1c566e6248bcdb084f38b3 SHA-256: 66e0b8f10ba18a8d3106428e5f518ab3c3964610fb247e0c6e1f49ea1bf00b5b
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. ClamAV and ML classifiers also flagged this PDF as malicious. The document body, though heavily obfuscated, appears to be a lure related to 'activity 3.5 applied statistics studylib'. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=activity+3.5+applied+statistics+studylib
    • https://cdn.sqhk.co/pabelewexo/iahbiGc/muddy_heights_2_apk_hack.pdf
    • https://cdn.sqhk.co/duxadikoti/gHG0Dic/sausage_party_slot_game.pdf
    • https://cdn.sqhk.co/juvebuzizej/wjKicMi/tabletop_lighted_tree_branches.pdf
    • https://cdn-cms.f-static.net/uploads/4416326/normal_60246f2267562.pdf
    • https://cdn.sqhk.co/wizevomorofe/gcchdgc/gun_simulator_game_pc.pdf
    • http://kewugujijafe.iblogger.org/mercedes_glc_250_4matic_performance.pdf
    • https://cdn.sqhk.co/xevowuto/fkL9Ghd/lutifotavo.pdf
    • https://cdn.sqhk.co/wujakegu/ihfhgt2/89310822528.pdf
    • https://cdn-cms.f-static.net/uploads/4379618/normal_5fd834d96ad08.pdf
    • https://cdn-cms.f-static.net/uploads/4444366/normal_5fda6d0eb2432.pdf
    • http://yourcy.com/34156744702nz0tk.pdf
    • https://cdn.sqhk.co/gupikekarobo/hbvqxAG/playerpro_music_player_apk_free_download.pdf
    • https://cdn.sqhk.co/neratimo/gcDdidR/gaxeba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sidukumu.epizy.com/4th_grade_math_word_problems_with_answers.pdf
    • http://gepemare.rf.gd/gajoxufagegitasevod.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_off0000d951.bin
773bac3c40a7f1eb2850555cbe10fea2d7e4681ef6156147df7299c26266e27e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD951 5584 bytes
font_01_sfnt_off0000ec79.bin
b55f705f55f08a745784c63179d5d817aba8e19abac88d969b77f98c5b1a4a3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC79 14684 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.