Malicious PDF — malware analysis report

Static analysis result for SHA-256 124ca0a49d7391df…

MALICIOUS

PDF

109.7 KB Created: 2021-03-29 16:52:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a4eec651e1b2e5b577ed19984a0322b SHA-1: 4047f9ef6466bdbd6ce99b01e304cafdac366bb2 SHA-256: 124ca0a49d7391df21a116e4840b5a1f8e82f77b632ff553125b714c646138a5
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to host a phishing or malware payload. The document body, though heavily obfuscated, suggests a lure related to firearm conversion, aiming to trick users into visiting the malicious URL.

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://dafemum.ru/strik?utm_term=tec+9+full+auto+conversion
    • https://cdn.sqhk.co/vofepubot/hbjcYge/java_jdk_mac.pdf
    • https://cdn.sqhk.co/vujagefamig/hjEdjiR/gajixigekedagenepafiruk.pdf
    • https://cdn.sqhk.co/sivunukiwe/fzGijhj/gezifafazivinelose.pdf
    • https://cdn.sqhk.co/bareziwo/gij78LW/xexaniluzomibuvuvigike.pdf
    • https://cdn.sqhk.co/wezufunin/d8gfvgi/19174316075.pdf
    • http://jokojujut.medianewsonline.com/explain_how_the_3_branches_of_government_work_together.pdf
    • https://cdn.sqhk.co/wusoxopejezo/hbgh8if/tizumewonanofulasumef.pdf
    • https://cdn.sqhk.co/wojidumezu/i9gfIih/seladilinut.pdf
    • https://cdn.sqhk.co/bemoranoz/mggh0Fp/kingston_soccer_tournament_2018.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://mobaramitutukox.rf.gd/how_he_loves_us_piano_chords_in_c.pdf
    • https://uploads.strikinglycdn.com/files/a0e8aac8-ceae-468e-900a-b1fcb6e44976/4620073447.pdf
    • https://uploads.strikinglycdn.com/files/2c699e9f-0259-4d58-883b-589f0634168c/49576477014.pdf
    • https://uploads.strikinglycdn.com/files/617fc944-3550-4a90-a82c-b39b7475278d/how_much_do_glass_fireplace_doors_cost.pdf
    • http://vibulowivez.epizy.com/free_video_to_gif_converter_2._0.pdf
    • https://s3.amazonaws.com/zifozujiwi/laundry_detergent_stained_sheets.pdf
    • https://s3.amazonaws.com/nodetuxapabara/nosizujitevuviberexedivo.pdf
    • https://s3.amazonaws.com/boduxatavepe/music_video_maker_free_windows_7.pdf
    • http://sojufuka.atwebpages.com/defending_jacob_season_2_who_killed_ben.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014cf1.bin
e926e92a036814dfde394f55f980a4d233815e99d02279e530f537b0f977c0b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CF1 4920 bytes
font_01_sfnt_off00015dc0.bin
792363d072f7dba18ab49eb4154b22947e4bde5ee95fe1b3a1b2a06e1b94a754		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15DC0 12604 bytes
font_02_sfnt_off0001868e.bin
2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1868E 16060 bytes
font_03_sfnt_off00019b22.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19B22 4324 bytes

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