Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded20a04e56b3e85…

MALICIOUS

PDF

74.4 KB Created: 2022-05-29 21:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: e25ede6eb8d883ad7fb322bb6f069fb0 SHA-1: 54608fd09daffb80b50be0f736c3f35fac04b53c SHA-256: ded20a04e56b3e85e2da4b56432526f8d45f07c02d693091f95ae7188eb7a6e2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high probability of malicious intent. It contains an embedded URI pointing to a suspicious URL, likely intended to trick the user into downloading a secondary payload. The document body is heavily obfuscated and contains the malicious URL, further supporting the phishing and download lure attack pattern.

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://lazav.co.za/YmrXLWy8?keyword=jones%20sewing%20machine%20manual%20downloads%20pdf%20software%20downloads
    • http://eunlocker.com/Images/Editor/file/47612772558.pdf
    • https://tanoviruxejalun.weebly.com/uploads/1/3/0/7/130775892/kaxazowerug-pavaxavazoxuri-pawekodilipej.pdf
    • https://casasholidays.com/scgtest/team-explore/uploads/files/pozijimad.pdf
    • https://cauthinh.com/luutru/files/vesixufozorine.pdf
    • http://sysquare.com/UserFiles/files/towigetitamopewujoxam.pdf
    • https://gomepenet.weebly.com/uploads/1/3/0/8/130874128/902cec.pdf
    • https://segurodegranizo.ar/noticias/fckeditor/file/11893552399.pdf
    • https://vajojesorenum.weebly.com/uploads/1/3/0/9/130969616/4552702.pdf
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621e6f854f8c2---13996804893.pdf
    • https://xanojamazifedim.weebly.com/uploads/1/3/5/3/135323589/f879fdd2731c.pdf
    • https://jiwanozote.weebly.com/uploads/1/3/4/3/134354006/1ad0fa7.pdf
    • https://pabenegoje.weebly.com/uploads/1/3/4/3/134348732/d0956b4b.pdf
    • http://groupementpecheduloir.com/ckfinder/userfiles/files/64620952095.pdf
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/162374384d0b22---40333250806.pdf
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/9rlr4cmgcpspunvm0eprd0pqhc/vavor.pdf
    • http://agenturamotivace.cz/uploadfiles/file/63773780186.pdf
    • http://quangcaovuanh.com/vietkiendo/upload/file/bomusamedoga.pdf
    • http://canevastoilestjean.com/upload/editor/file/3553124644.pdf
    • https://mondoaudio.it/img/uploaded/file/14584941516.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_off0000be61.bin
aee815ad27aa3deef9ff47c19e5060f5500b7c2f599e475e4d01d3be581cba2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE61 16464 bytes
font_01_sfnt_off0000e90b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE90B 16792 bytes
font_02_sfnt_off00010122.bin
620d5ec0d15410a9a877d72246075a7445097be2bac20d19e4ea70c7b21e4f23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10122 11244 bytes

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