Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f09ce8c7fa06e4a…

MALICIOUS

PDF

111.2 KB Created: 2021-08-02 22:45:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d14cfd355ad83e26a2143324f6aa23de SHA-1: 0ba27f2adb2ab69d5168f2d83713757b266aaaa9 SHA-256: 7f09ce8c7fa06e4a7e20f6c3c31225c36b6b855d7089ecf79a7c176af3501435
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous PDF files hosted on compromised WordPress sites, indicating a likely phishing or SEO poisoning campaign. The ML classifier and ClamAV detection strongly suggest malicious intent, with the links serving as the primary attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a175f6ac4eb---kotidumub.pdf In PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/c7cad1020576153bf2cbeafbeb3d46fc/90004931898.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/ocdrd6fc9t6igt6k31pah9gho9/71958253231.pdfIn PDF document text
    • http://allasclub.com/campannas/file/76356438423.pdfIn PDF document text
    • http://gmicropilotes.com/uploads/files/wafas.pdfIn PDF document text
    • https://preprodpcb.com/userfiles/files/44109505078.pdfIn PDF document text
    • http://medtravel.pro/images/hand_uploaded/files/31513190498.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/o977m6k29u7p0lss24gdbdk3n4/11893979032.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/5b3dcde185e18e5f7c5c9423d93a2c1e/5298969213.pdfIn PDF document text
    • https://soosekszer.hu/upload/files/xevugog.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070cb1768471---mibafokufag.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/jalodip.pdfIn PDF document text
    • https://mimpi1pusat.com/contents//files/64151847668.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/kol3tardop3uagnmkp7t6jq7ej/sumutexejim.pdfIn PDF document text
    • http://monkeytailranchdonation.org/clients/e/e8/e82116dd0b5861b0917add2a69208af2/File/zetag.pdfIn PDF document text
    • http://dchs1961.com/clients/871949/File/65880538148.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/100d4a4a6ab854a9a63cce795af3b4a8/8811350744.pdfIn PDF document text
    • https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/nezavirewatekoturixumete.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/a0fc0d7233d6ca3b4ca61e22c40c7bfe/lujobunovosagigo.pdfIn PDF document text
    • http://ztkammer.at/uploads/file/ginekoruzewogezajojim.pdfIn PDF document text
    • https://www.stjohnhomelessshelter.org/wp-content/plugins/super-forms/uploads/php/files/f8b2cfb628f8e4dfd5e23447ac48683a/xepavogebifedifogivas.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/304f47c37c196ef3577e2ad883347e5e/dazeketumunevumemuwu.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ea05a6153---28759061348.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/32372728800.pdfIn PDF document text
    • http://coumert.com/images/file/vululutowusasumazes.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=how+to+do+brackets+on+delta+mathPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A4E 10852 bytes
SHA-256: c2def06c0b7b4a1707dacc1aff5e024d6664e3f9a34a897399f9b1aa20e36011
font_01_sfnt_off00014337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14337 22472 bytes
SHA-256: 2f78ee8199c4c2e95344abd274bfd111046b73edf5fe3232f2f9651c1e1fb214
font_02_sfnt_off00018028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18028 16276 bytes
SHA-256: 70d84425f444f4f53001da7000794c88d70c3b77a608b6c25f56cda3d20125e3
font_03_sfnt_off0001960f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1960F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1