Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a87d5d8bf0e640…

MALICIOUS

PDF

89.1 KB Created: 2021-06-30 21:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5008091ef9e8c75220a8caba8e28cb36 SHA-1: 01ea2b5c63ad46706f783299dd462463ca0e7716 SHA-256: 36a87d5d8bf0e64067d3cc3385c7e0c2522f68fdc7d34620f303473bb65352f7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of multiple embedded URLs, many of which are unknown, suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with techniques used to deliver malicious payloads or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://bomtvplus.com/data/board/file/20210615231154.pdf
    • http://albatrossmrn.com/konadnew/userfiles/file/waxeruga.pdf
    • http://granite1962.com/clients/869125/File/pudexofaforixezew.pdf
    • http://karpatskiles.ru/store/file/wabitegiwurunefunarivel.pdf
    • https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/i0k95evpuede0213m5bv1b7dmt/69673349475.pdf
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/12vko6km7snqnapa7c9e2fghd6/48126044260.pdf
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a296be0e850---80897585167.pdf
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/3aa74b5f884fde901b02301d94f772c4/jadusuvadigalesuvilif.pdf
    • https://anmimar.com/royal/userfiles/file/58909107345.pdf
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/111143218ddd00b0595860928c2f6585/jufudu.pdf
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160ae2f7958456---25184038186.pdf
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/181e63148b65348723ad0a88bf885e61/39744600746.pdf
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0e71d443ab---54246654823.pdf
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a370e790e2171339534274bcc0a5f286/demubonufuzasozuvefitu.pdf
    • http://alarcon-v.com/editor_upload_image/file/2207796887.pdf
    • https://langestrand.se/anvandarbilder/204/files/59891987260.pdf
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160b3ec7f08c42---7406226081.pdf
    • http://parkhighclassof60.com/clients/871169/File/67121338053.pdf
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/5315bi8gj5fgho3t1o5haoijua/kebitaxezi.pdf
    • http://labcoop-jsc.com/wp-content/plugins/super-forms/uploads/php/files/psfio0ou5mpmf75nbicmfqq620/fapexexidezolejivifobizu.pdf
    • http://astro2sphere.com/admin/images/file/25757351258.pdf
    • http://hgbs.de/userfiles/file/33848484310.pdf
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a35e521682d---15692278409.pdf
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2f49ad19c2900afac2de716f3d2750ac/55797834599.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=mexican+names+that+start+with+j
    • 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_off0000f6e3.bin
612e31aaf2dc6c76cf430e93aac385b9378363900d7665f8ca15e10e9eb1f925		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E3 10640 bytes
font_01_sfnt_off00010f14.bin
06efb57e640241158603c8b97313794e1a69857897d9f73846be576e725ea8fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F14 18396 bytes
font_02_sfnt_off00013d63.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D63 16792 bytes

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