Malicious PDF — malware analysis report

Static analysis result for SHA-256 60024cebd3e5d7d0…

MALICIOUS

PDF

88.8 KB Created: 2021-07-29 10:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e529981ab7b5f30e37e0a6e8c15f80cb SHA-1: e297c14156d271b067cc3d7b9923bff29b718360 SHA-256: 60024cebd3e5d7d0669df30bf65a8bcff15e0f5a7ccc6b4c9e4b0579c2e7d207
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised WordPress sites, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded URLs point towards an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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 https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/1b4821e98421847b155a77de6425948c/badazabazilisadi.pdf In PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16081c234c999a---getomise.pdfIn PDF document text
    • https://bnbcostaverde.it/userfiles/file/wesabewevod.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/jpbmakbn26tpafnedsollb5or3/71653627965.pdfIn PDF document text
    • https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/a2326f7346f9b00f0c8ff4dbacc45aea/44724288618.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/896335b57c4425484a4b1f11fa19114e/nuretaxevopudunisume.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be4f0d5171e---62202544098.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/q2vqo4sr8291l48hlt3e079kbp/setimi.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ccc677a7247---sikoxatojefavelefesebaxi.pdfIn PDF document text
    • https://anfauglir.com/images/file/fixafozitowopabarelasagi.pdfIn PDF document text
    • https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/14a99d59104fe9d103ccf1e26bcfb8a0/55576837521.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16086c466762fc---banudiru.pdfIn PDF document text
    • http://ecohouse-lab.com/userfiles/file/puxunizugusu.pdfIn PDF document text
    • http://www.tokyomagic.jp/images/library/File/risalati.pdfIn PDF document text
    • http://ettermanenterprises.com/ckfinder/userfiles/files/jogivovuwamuxuzidore.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/o8412t1slcii08ibi2c9tgkfc0/24816602949.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078c595b4d7d---94947594302.pdfIn PDF document text
    • https://brod-plovdiv.com/images/72522528536.pdfIn PDF document text
    • http://tourbusan.net/FileData/ckfinder/files/20210718_3565ADBE6DFAB351.pdfIn PDF document text
    • http://bellsazshihtzu.com/clients/878694/File/nunadadewiforiromilasekop.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608c20412022b---28540262996.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f5de9bd85---faputisoveburagosojagopem.pdfIn PDF document text
    • http://internationalbeautypageants.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/1190992119.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/lawipirifevududexez.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/80805274906.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/k3k2mdk7fbq8r1voh38km38qqp/medor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=how+do+i+apply+to+correctional+servicesPDF 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_off0000f5bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BD 17584 bytes
SHA-256: 57e96cb526d61b83aeed3cc6f56f59ea5bd893d0f8939cc20c85e1c5596cef7a
font_01_sfnt_off000123f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013c0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C0E 10764 bytes
SHA-256: d3366543c0ed24b223a4670c7c0d6bb3e0b1b9833272da6c666977c117e8f322

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