Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12bf44f2d75dda6…

MALICIOUS

PDF

73.6 KB Created: 2021-06-27 04:32:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: ab7ac0e83d3e70b5e03e1f63aab77074 SHA-1: ae0cae8231a93dd4ded9db98fa17dcfaee79f50a SHA-256: e12bf44f2d75dda6a0f2b731acd57f567a73314e207621adb1732d70eb94d7bc
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a link farm pointing to numerous distinct hosts, many of which are compromised WordPress sites. The primary purpose appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa908417142---98960564377.pdf In PDF document text
    • http://krzysztofmalec.pl/gfx/fck/file/gawamumuwidanitota.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d1fc2e2029---21168819733.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/0d526cd1aab98dd2df1d1f25a12ab992/82205718521.pdfIn PDF document text
    • http://theheavent.com/userfiles/files/nuvorejabomaluzoro.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/dciqcfk7qrk0500kt4hldv3mk3/pazaxaxote.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a525640671e---wibelurixafiwuferik.pdfIn PDF document text
    • https://locoffice.ru/userfiles/file/49340595808.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/b3dd76a29020fa8553368d812597b9bd/86719287622.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/fa067b1c86edd2958954ec27dc3b0f74/82844736098.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/sejusowuseluvudogu.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/5746bfb0b187294098d49de5a952559b/dirulegud.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/1e6a28825191edec63672bfbc1fc65a7/78397124923.pdfIn PDF document text
    • http://www.ecvbrass.ch/user/web/file/98855566365.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cdbe2cf378b---xixexiv.pdfIn PDF document text
    • http://massageindex.nl/images/uploads/xoruzubavusenulusazomuz.pdfIn PDF document text
    • http://jfe.hk/userfiles/vuwuxosew.pdfIn PDF document text
    • https://tonwen.org/userfiles/file/tejisazutetu.pdfIn PDF document text
    • http://budohurtsa.pl/userfiles/file/gekigunuzebuv.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/fozanevoxiximafedidikari.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/bbeucmuomc91h4adce8nculfvo/wumadedu.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/b2afbd522fa094b5be1bda20db4e1c40/78114144183.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/kjagldhfa9btci8kgobinf71m1/satizowut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=perfect+mom+nakedPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC037 16048 bytes
SHA-256: 26e69c8167296fa4c6cb753d47f55ed22aa1656c6a5ddd229cf298ac879120e7
font_01_sfnt_off0000e9dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000101f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F4 10424 bytes
SHA-256: e5c27b64a9602d3b51cd2f42182e5916747f52e19aaa883b40a388f7c377f872