Malicious PDF — malware analysis report

Static analysis result for SHA-256 346364d208333542…

MALICIOUS

PDF

69.5 KB Created: 2021-05-18 05:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 015150abc1d74557f6991d3c6181dfc5 SHA-1: 67855ea4a525bb0799cfd9d44728b58a3333110a SHA-256: 346364d208333542d65996d867063e1cfb8eda43ba7fbeed05b36574e890a064
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating it likely exploits a vulnerability for client execution. It contains numerous links to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to 'functional strength training exercises pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • 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://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160863cd5e946c---xidatunojiro.pdf
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/fkkvs665t85rlemlc7pjh8agjp/giwunawitolovabakenak.pdf
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f45f78efc4---divewutawupesuzunovoxo.pdf
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/30bc3bc15b15dae5371698adb9aadb40/xuwele.pdf
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/l4o7dbf95gtsdm64dj0udqag3s/velijakowid.pdf
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/075578a1c9c728f8c0ced04ec70d0d0c/bemuditipuxaj.pdf
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607cabfd170bc---76991140644.pdf
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607421839481b---xanowododidolofurixipad.pdf
    • http://nutronicltd.com/userfiles/file/mejadezotesatikubaz.pdf
    • http://bilmatbasim.com/userfiles/file/sutotokewiku.pdf
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/52e21e9264da7c08952098542f3cba97/40383024945.pdf
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/dua6vool7lk9ict0jact5cr2bd/kopigofuzesudolegegin.pdf
    • http://littlepearlspublishing.in/data/eimages/file/xapawidusubememodibalok.pdf
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/89se7opb656mh3hc32goob49r0/866072240.pdf
    • http://rolmech-strzelno.pl/Upload/file/lovakukota.pdf
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5e50385ba---gapem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=functional+strength+training+exercises+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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3e9.bin
4405820e7548026748c7c2e43dea8b637b4ecfff3825d5da28eda9ef392b3687		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E9 5440 bytes
font_01_sfnt_off0000e66a.bin
69a3aeb2c38d925aa4534f10b7de2c8961c7b0084d63d860200d17d24b265c0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE66A 10136 bytes

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