Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e43c6fde4861b41…

MALICIOUS

PDF

78.9 KB Created: 2021-07-08 13:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 19f494c7ccb6aedd335edd400a86513e SHA-1: dda0e615594aa7af1d3fd8b1f92aa80b0900f075 SHA-256: 5e43c6fde4861b4104527d47e0830ce2ff6cf8b230dfa8e458364ee500961604
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. The presence of embedded URLs, some with unknown reputation, suggests it may be used for phishing or to download further malicious content. No scripts were extracted, but the PDF structure itself is likely exploited.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/5cc56e19141f7bf557f0f30314481c25/jifidovozerunom.pdf
    • http://www.psoealora.es/ckfinder/userfiles/files/varisave.pdf
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/nlntvci0t7brnf3hpjlhp795u6/rujusesopevorapuvi.pdf
    • https://communeouchamps.fr/userfiles/file/dalasepirabuditane.pdf
    • http://allaboutdowney.com/userimages/11740590429.pdf
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/6d25c6f61433681791d42a25be9fac5e/64954249044.pdf
    • http://komputerzagrosze.pl/userfiles/file/33605713043.pdf
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e01292a902---vanoriwoziditixob.pdf
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/831aef7a814a05b02cf5eb9fcd96f853/38861883015.pdf
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/9e19ebfbc7fac74985fb87538ff73ab6/gedalubejobirufimikiwom.pdf
    • https://ludifrance.fr/userfiles/file/kamuzenolam.pdf
    • https://jajugroup.com/ckfinder/userfiles/files/mewutovovova.pdf
    • http://casaatlantida.com/userfiles/file///34532957780.pdf
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/f75bcc74659f346e56b3d1a5894c0922/51819225738.pdf
    • https://dewalt-naradi.cz/media/upload/editor/file/10186803053.pdf
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/2c2dedd59d370c1c9652f9aa76300402/95966214729.pdf
    • https://deltaguvenlik.net/userfiles/file/55652540437.pdf
    • http://zonazero.es/userfiles/file/zutijex.pdf
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083873962a83---mekifikup.pdf
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/16099039fd503c---30449982936.pdf
    • https://chris-arnold.com/userfiles/file/4539129745.pdf
    • http://beliangka.com/contents//files/gonaw.pdf
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/5u39ur2mp6js4sjr97cdh53ua6/miwedewivosiwesoko.pdf
    • http://alrabbancapital.com/file/files/77528899134.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=tickets+to+seattle+from+dallas
    • 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_off0000cfee.bin
88e0bf7784a3728b3e031dfa71f7bdfa2cb5e6cf6dd5ab508152495bd5790498		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFEE 17560 bytes
font_01_sfnt_off0000fe30.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE30 16792 bytes
font_02_sfnt_off00011647.bin
94ce7d90cb6bd4da2bcdc7275c6c568dab02d8d6c31a2f38a812e17dec05819f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11647 10588 bytes

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