Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e3bdba9c96efef…

MALICIOUS

PDF

66.5 KB Created: 2021-09-23 00:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 52862827373d949a02e5758f9558ef29 SHA-1: 0c0a94675891c8c12d5d9fffa0a9514298b0b780 SHA-256: 08e3bdba9c96efef5df8b591c4dd2a6247bbb381dc2811ee95b18010be91f7b5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised websites or are part of a link farm designed to obscure the final destination. Heuristics indicate these links are used for phishing or malware distribution, with ClamAV specifically flagging it as a 'Pdf.Phishing.Trojan'. The presence of multiple external links suggests an attempt to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6906

Heuristics 5

  • 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
  • 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://pixomot.ru/uplcv?utm_term=pvz+heroes+unlimited+gems PDF link annotation
    • http://fotostudiovaccari.it/userfiles/files/49933501858.pdfIn PDF document text
    • https://mimzyonline.com/userfiles/file/80619474818.pdfIn PDF document text
    • http://autowassenindex.nl/images/uploads/vasewezoxajirutegelevu.pdfIn PDF document text
    • https://semineebrasov.ro/printuri-fi/files/96634694896.pdfIn PDF document text
    • https://misbahelmudii.org/ckfinder/userfiles/files/sobavanakaduma.pdfIn PDF document text
    • https://mimpishio1bet.net/contents/files/viravowaditonu.pdfIn PDF document text
    • http://pataibicaj.hu/userfiles/file/23716989671.pdfIn PDF document text
    • http://xn--3e0b556bhrbowi6undva.com/ckupload/files/83296680457.pdfIn PDF document text
    • http://floridare.ru/app/webroot/img/uploads/file/521105_kivefutedi.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/2692306357a465412726dcdff73c8fdd/mixobamajuregasujedetaku.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16146f665e2957---nekutibe.pdfIn PDF document text
    • http://minipit.com/data/files/xajizu.pdfIn PDF document text
    • https://www.meditech.cz/ckfinder/userfiles/files/gajulozowifowoxavonod.pdfIn PDF document text
    • http://xn--h1acbpobggs.xn--p1ai/data/files/14353591765.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ebffbd0e75---51783077076.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f4e8ed74a1---9945611835.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/9252d16edf1a609eb7ecbef4b1bfc325/50530471724.pdfIn PDF document text
    • http://kwong-cheong.com/userfiles/2630103382.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/95b377a73c6ee5e5bd2ab16b042fc55f/tizewaditujarana.pdfIn PDF document text
    • http://keramann.ru/uploads/files/pilugopelipamokemotuvijen.pdfIn PDF document text
    • http://kleinschadenexperte.de/userfiles/file/22735742749.pdfIn PDF document text
    • http://lisaarkinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/83921225484.pdfIn PDF document text
    • http://zenkatsu.dk/files/42327660525.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3bf399769---95225648591.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC6 10760 bytes
SHA-256: 226f2b073e069fb217513e354921de9ab5a10b3474455f45d447ff7f3cbff18c

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