Malicious PDF — malware analysis report

Static analysis result for SHA-256 f317f1be957bb71d…

MALICIOUS

PDF

106.1 KB Created: 2021-06-29 03:02:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e25fd1ae4b70d2d584f82e002bcdc4ba SHA-1: 7eea1f950aeff4933aa11dac0ef0559e062e540a SHA-256: f317f1be957bb71d64d3ab2ff264bc19cf2f09871bb5864f42e27405ee850e77
156 Risk Score

Malware Insights

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

The PDF document contains a link farm pointing to multiple compromised websites, likely intended to redirect users to malicious content. Heuristics indicate the PDF is a link farm on disposable hosting and that it is flagged by ClamAV as a phishing trojan. The ML classifier also strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/9oird27109e99r6hjc2s21kga2/39935946338.pdf In PDF document text
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/30d34ee7115c62ddaf85831858551c8c/31064516723.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/82effdff54de18d01cf7904d74bb2a1d/55178525105.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dae08568aa---13442727985.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba1be3be5b2---52024338003.pdfIn PDF document text
    • http://sanzmendia.com/userfiles/files/13722304682.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/b3f35cb293e553ea12700c200921fc08/zoriboxizukupifivubajekuj.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1fd0a4c44---lovepixujamasupot.pdfIn PDF document text
    • http://bayanairag.com/uploads/userfiles/files/63157127577.pdfIn PDF document text
    • http://rudolphi.nu/userfiles/file/70334348287.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f2db8c8f9---muvule.pdfIn PDF document text
    • https://nezrenpin.com/calisma2/files/uploads/jugerinimoturi.pdfIn PDF document text
    • https://toskov-yordanov.com/userfiles/file/16489037908.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ee9204261---29099488225.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/abcc9b015ee0b65f5630dc2df4b8a1cd/tasojenivununezekuno.pdfIn PDF document text
    • http://ekotop.eu/userfiles/file/megexonagixobeditofez.pdfIn PDF document text
    • https://hkbca.org/UploadFiles/file/20210602193643169.pdfIn PDF document text
    • https://ideylia.fr/uploads/file/4230110917.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2bcc47f863---zuvovibinob.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/9olbth5mc9r7cljh3k55pbncd0/tijilegibetugup.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/00ac6e4633270357df45ca3de3dfbc56/kefigenizisuj.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b84bbc41d96---65265172416.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609858c80757d---vojaxakokofezinajuzifetos.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=chemical+formula+of+copper+sulphate+isPDF 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_off00013d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D26 17196 bytes
SHA-256: 2f58dd29eda610d53ce40a163d9d81b4236e8452d3ae45f2cacbed57379be191
font_01_sfnt_off00016a13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A13 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001822a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1822A 10772 bytes
SHA-256: 6cbaf98a6c76afb45ba0ccf6080cf435a3ab36aa563f1a874f2308ab0fbd78af

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