Malicious PDF — malware analysis report

Static analysis result for SHA-256 06282af627e29909…

MALICIOUS

PDF

68.1 KB Created: 2021-10-01 17:01:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1a0e63bc34a5c4473e7fcda06c68ac52 SHA-1: b192389bc4abe88b3e7ddaca74e8aa37281b555b SHA-256: 06282af627e29909249dee4405d6bdaeb16cec76b704b3a6240850640174e366
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and numerous external URIs, indicating it is designed to redirect users to potentially malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The presence of embedded JavaScript points to its use in executing malicious actions within the PDF context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://philabc.ru/uplcv?utm_term=from+pdf+to+word+mac
    • https://www.traitagri-solutions-alternatives.fr/ckfinder/userfiles/files/kisitifarozewema.pdf
    • http://www.icareonline.net.au/ckfinder/icare/files/21905458525.pdf
    • https://hujanuang.com/contents/files/97526806298.pdf
    • http://carlaschroyen.com/content_docs/mimosid.pdf
    • http://tuecpa.com/file_media/file_image/file/12385149371.pdf
    • http://bjsixiang.com/jingkelun/userfiles/files/20210920184558.pdf
    • http://enjoy.sk/editor_uploads/system/files/93915569669.pdf
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4036e5066---99924224173.pdf
    • http://botosani.ro/img/uploads/file/95209295694.pdf
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134b0762ce72---34575986863.pdf
    • http://umffz21.ru/admin/ckfinder/userfiles/files/zijinirorom.pdf
    • https://nestsearch.in/admin/uploads/file/11110737617.pdf
    • http://koreabulk.net/userData/board/file/6159738898.pdf
    • http://sunwisechem.com/Uploadfiles/files/pewujiwodok.pdf
    • http://kutscher-customs.de/gfx/userfiles/files/42523586485.pdf
    • http://fusen-es.info/yamituki-n/uploads/files/wugigesowijefodov.pdf
    • https://accuratesearch.com/userfiles/file/44310904903.pdf
    • http://gestaocipa.com/public_html/Imagens/file/zakixojed.pdf
    • http://ricarda-allegra.de/userfiles/file/27196762026.pdf
    • https://bellcera.60km.com/upload/files/wamif.pdf
    • https://equipelec.fr/ckfinder/userfiles/files/damefajadonide.pdf
    • http://conservativista.com/js/ckfinder/userfiles/files/dafese.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_off0000ad80.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD80 16792 bytes
font_01_sfnt_off0000c592.bin
34dc371054dfcea4ab0d88240d5741e35e58a3644f47b1467e184b192b2c012c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC592 15188 bytes
font_02_sfnt_off0000ec17.bin
07286bd8d7b51a95add8de58c3d5d02a8f8854b23ef5bd3db2c44246b68c9e47		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC17 10300 bytes

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