Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa982d826f6f39cf…

MALICIOUS

PDF

93.3 KB Created: 2021-06-25 20:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fe1a8c828c1d5b57c620032ed9f8d7fe SHA-1: 306a6307bb7b151bb656a3e0f0fb21e9952ea0e2 SHA-256: aa982d826f6f39cf6d1f16087837151d13a980d4ec214eab0b7411d06efaa839
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to lure the user into a phishing or malware download site. The presence of embedded URLs and the overall detection profile strongly suggest a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://oniceh.ru/uplcv?utm_term=rains+on+the+just+and+the+unjust+kjv
    • https://intrigantka.ru/images/userfiles/file/pejixolobunog.pdf
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b03ef36d8e---75125135048.pdf
    • https://perfecthospitals.org/FCKeditor/file/46250826906.pdf
    • http://cncforginghammer.com/d/files/tujupuxebapo.pdf
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/aee91naprpfn5dp16gt52bknsr/14035645788.pdf
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/vgg4ugqk4hfus1opmcntf7kc4f/43096013148.pdf
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/e40c99df78958231b6800934ba81db1a/57580487480.pdf
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/decf228ab6a5ea403cc861ef4f0a7b1d/rotedofedaratadopuf.pdf
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160768d6de650c---56369466673.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085f6f727a96.pdf
    • http://evopizza.lt/ckfinder/userfiles/files/23801549027.pdf
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b120f3b6f73---9419564843.pdf
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b54d9e4d63d---4092458247.pdf
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/6b90cc49bccdb01d6d0f58ba77cc5d90/89006232830.pdf
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c5ac0a3ee34---95330296568.pdf
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/3f71949efd83032ff1226b32e8e68eb3/bedelojosikesari.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://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_off00010873.bin
7ffb5e5897cca4a10e3159b62fa81567229ee2d924cf708792b4547bf7219be7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10873 10632 bytes
font_01_sfnt_off000120ba.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120BA 16792 bytes
font_02_sfnt_off000138cc.bin
59675d2d3ed79d8340220fc39df2035f13c0c3a8b041e3d9fb9cde112009e884		 pdf-font-stream PDF embedded font (sfnt) at offset 0x138CC 18668 bytes

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