Malicious PDF — malware analysis report

Static analysis result for SHA-256 5922b1cce9a0856a…

MALICIOUS

PDF

92.9 KB Created: 2021-06-26 01:35:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: fe763ef2c69fcbd23c0688b397a3232c SHA-1: 538deb05e0bf297aea8beab92d742808004d786a SHA-256: 5922b1cce9a0856a31ecd937f69cc52c8daa4ba3c3cfc9cbd5e786b05aef793f
196 Risk Score

Malware Insights

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

The PDF contains multiple links to external sites, many of which host further PDF files, indicating a link farm designed to obscure the true destination. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's content is a lure for an advance-fee scam, likely involving fake prizes or parcel deliveries. The ML classifier and ClamAV detection further confirm its malicious nature, with the embedded URLs likely leading to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a48a56d2052---18361370216.pdf In PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b6200cc8504---95734863826.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/2160730f35c08959b91859dc60e0d225/59392629869.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/7kaioqg9371sqq1n1jk8occnf3/vibenobixujaru.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/79e7ffceed4ef21238e71a6566439ae3/tenetopategudesatoz.pdfIn PDF document text
    • http://interno-kazan.ru/upload/files/rolodubajoduw.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/9e70dcfd6a432cbd2c24c065f0ccc630/monexanufiteda.pdfIn PDF document text
    • http://gingerbreadvillage.org/clients/e/e3/e396b250b60561adcb946853f9f62e29/File/ripederidafimubajoxu.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd3cf88cb1---mutosiviwowowunowufegore.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160970841a99c4---36030997227.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/xabalukotabewafen.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/d4860dbeee70631e91d55098ea2049d7/51782299059.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/6f4383c1b6041d8173511a262f548d9b/savovivilobapap.pdfIn PDF document text
    • http://chiengthai.com/file_media/file_image/file/fusagafov.pdfIn PDF document text
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfafd06b1c7---28250237159.pdfIn PDF document text
    • https://mwasafat.com/uploads/files/18364071254.pdfIn PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607646d63407b---mamesagitawuzove.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bd000be44b3---74465867320.pdfIn PDF document text
    • http://tragiaocolamsapa.com/userfiles/image/file/gogazobinovifo.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/16087694248f82---49619183792.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/c364da60ed1dff7a2afafe7094ce69fe/jujalazujopawatasona.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/lig50o2unhb7gho3etkap3pks5/mipotalixes.pdfIn PDF document text
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/v53apdca23omqih42dkmkfvibf/69959685743.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=add+extra+page+in+pdfPDF 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_off000106d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EEC 10424 bytes
SHA-256: dc745dee6bb55e12e891d4bf2946610414e954135107792af1ae8db6499e785e
font_02_sfnt_off00013672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13672 18476 bytes
SHA-256: 36a83706b8117562ad87e84b2983492a9c1f3e7a8486cbadb52064b2eeb1bb1b

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