Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2829b282d0a6f10…

MALICIOUS

PDF

155.7 KB Created: 2022-05-27 12:38:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: c39c80822442f53539dc64b940933b20 SHA-1: 55d47350efc1712bd72831b520781c91c1f4c252 SHA-256: d2829b282d0a6f100f8258a0aaf77624ba9a54644e4277e90a2ce42d068af27b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'tevav.co.za', which is likely a malicious download link. The document body is heavily obfuscated, preventing analysis of its specific content, but the presence of a malicious URI and high detection scores indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://tevav.co.za/YmrXLWy8?keyword=knowledge%20of%20self%205%20percenters%20pdf%20free%20printable%20worksheets%20pdf
    • https://lefawiput.weebly.com/uploads/1/3/5/3/135324435/datedunedapusigomo.pdf
    • https://zigamebujadosa.weebly.com/uploads/1/3/4/7/134745820/f10e2.pdf
    • http://anitacalderon.com/ckfinder/userfiles/files/52922126450.pdf
    • https://sitobewabaxepok.weebly.com/uploads/1/3/5/2/135295681/xilafaruk-parozesami-polajepu-xosejalapizo.pdf
    • https://relorurexo.weebly.com/uploads/1/3/5/3/135391300/3046984.pdf
    • https://dazerekeluzaluv.weebly.com/uploads/1/4/1/5/141566376/3240431.pdf
    • https://xovozenoz.weebly.com/uploads/1/3/4/3/134348708/tapub.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16226845bcd52d---66638966393.pdf
    • https://melajepa.weebly.com/uploads/1/3/4/6/134664669/268b443d.pdf
    • https://grandiosieventinuziali.it/filesUploads/file/geviputowagenusen.pdf
    • https://gixajukixopa.weebly.com/uploads/1/3/4/8/134877082/2429664.pdf
    • http://nandishoverseas.com/UserFiles/File/20191884938.pdf
    • https://puwabasuguwuvez.weebly.com/uploads/1/4/1/3/141355039/sipasejedo_rejegitojaxipok.pdf
    • https://kiwaluraxipexe.weebly.com/uploads/1/3/5/3/135326690/timelenogudo.pdf
    • http://vucert.vn/uploads/files/32228746629.pdf
    • https://kepuwizetel.weebly.com/uploads/1/3/5/3/135304134/b33525eced8b.pdf
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/eud9bdi9q276q69o5ltl0c9uea/87315048936.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_off0002009f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x2009F 16792 bytes
font_01_sfnt_off000218b6.bin
a46c0fb6192281e4ca8d5661740b5b494d7f44d59e4e035502e077e33cef231a
pdf-font-stream PDF embedded font (sfnt) at offset 0x218B6 11344 bytes
font_02_sfnt_off00023303.bin
c9fce13bfb42bfc0db2048ee92364be4090a9ea981ed09f405736b243c999a3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x23303 17432 bytes