Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e3f3b5902669e64…

MALICIOUS

PDF

255.0 KB Created: 2022-06-08 14:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: e8971f3d22635c4dcf2926e5500c54c0 SHA-1: f2775714a39b540d96276b77f38ac521b31af714 SHA-256: 8e3f3b5902669e64fab701d61d6fdd7aaa29e5320be98a3b35e5616938d43432
96 Risk Score

Malware Insights

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

The file is a PDF containing multiple embedded URLs, one of which is associated with a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of numerous external URIs suggests a distribution mechanism for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6599

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://fecuq.co.za/XSRYdR1H?utm_term=antonyms+and+synonyms+list+pdf+download+full+free+games+for+pc
    • https://bruceleevideos.org/images/file/fezolukuva.pdf
    • https://riganekonima.weebly.com/uploads/1/3/0/8/130874133/zodoxumoganiriw.pdf
    • http://nagymester.com/admin/kcfinder/upload/files/4025976459.pdf
    • https://storycycle.com/ckfinder/userfiles/files/40155674788.pdf
    • http://suatainhabacninh.com/webroot/img/files/danaxogebure.pdf
    • https://effiebulgaria.org/files/files/48477476698.pdf
    • https://rikutokamalaru.weebly.com/uploads/1/3/4/3/134319242/9eca83bdf.pdf
    • http://thechitay.com/uploads/userfiles/file/nepiwumapewubikutagebura.pdf
    • http://autoscuolavalerio.it/userfiles/files/69240694307.pdf
    • https://zutegikovepob.weebly.com/uploads/1/3/4/0/134017150/3566286.pdf
    • http://daiichilogistics.com/uploads/news_file/nixuteboxewonenawuxerelov.pdf
    • https://lasubumeta.weebly.com/uploads/1/4/1/8/141847842/lugaxibazude.pdf
    • https://dupasaku.weebly.com/uploads/1/3/4/2/134235895/paweratij_xonuda.pdf
    • https://kecweleri.kendalkab.go.id/kcfinder/upload/files/pimev.pdf
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/i0cbm5eiiujmjf8cra3ih8bf8j/sovobixigewuneke.pdf
    • https://kororopimebopam.weebly.com/uploads/1/3/4/6/134645688/77aed3.pdf
    • https://tajamopem.weebly.com/uploads/1/3/4/7/134745730/fefidi.pdf
    • http://maremio.ru/admin/ckfinder/userfiles/files/60463599173.pdf
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/162058a78b7bfa---lomevipin.pdf
    • https://suzokapiwewop.weebly.com/uploads/1/3/4/3/134351383/6fa9c.pdf
    • https://isped.cz/kcfinder/upload/files/13941119561.pdf
    • http://bbmeti.it/userfiles/files/nolujoxiwipugidix.pdf
    • https://feketofemij.weebly.com/uploads/1/3/1/4/131452988/4128608.pdf
    • http://kleinschadenexpert.de/userfiles/file/48111936140.pdf
    • https://viengchampatour.com/online/files/files/pagokarokafamepuxop.pdf
    • http://studiomuraca.eu/userfiles/files/woridasapefu.pdf
    • http://wittymall.com/multimedia/userfiles/file/32592578485.pdf
    • http://skygondola.com/admin/kcfinder/upload/files/wulila.pdf
    • https://xitapazutirubej.weebly.com/uploads/1/3/4/8/134882608/4194984.pdf
    • http://kgpms.org/kcfinder/upload/files/50568009256.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_off00038569.bin
1c2178a9e2e32edade49086c16ccdfbaa3f86081704154073aab87881e3dc46a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38569 11244 bytes
font_01_sfnt_off00039fb2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x39FB2 16792 bytes
font_02_sfnt_off0003b7c4.bin
88756e76192c0cf7f92fd8fe87f18dd002637aa6f81bb35d77ecfc0998fce723		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B7C4 19856 bytes

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