Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d2c666d8a4a88a…

MALICIOUS

PDF

82.8 KB Created: 2021-10-04 13:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 3ff6a720702df9ca31f75c6788019469 SHA-1: 6b4b6f8eaf7353e001c72da5909e14c9976dc735 SHA-256: c5d2c666d8a4a88a727d5cd042a2d384c93f4bd5f9168084ca4fcdbf48a59605
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://xn--80aamwn.xn--p1ai/userfiles/file/wakalatadaliwoziwego.pdf In PDF document text
    • https://ruxthai-guesthouse-chiangmai.com/ckfinder/userfiles/files/2255548381.pdfIn PDF document text
    • http://julianina.de/upload/file/futogorafavanikaboboki.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614de41c23be2---javikimunupexokodatag.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/ce3c28e6fe1ec090d744ecf00504713e/55388008575.pdfIn PDF document text
    • http://27derajat.com/assets/ckfinder/core/connector/php/uploads/files/51863653465.pdfIn PDF document text
    • http://lovesenergy.nl/file/jodut.pdfIn PDF document text
    • https://mehreganimaging.ir/images/upload/files/repebuvobowifikufulebixu.pdfIn PDF document text
    • http://daming-school.com/userfiles/file/66284283494.pdfIn PDF document text
    • http://www.coverseg.com/uploads/ckfinder/files/28994658468.pdfIn PDF document text
    • https://mama-light.net/business_school/uploads/file/rizakoxumivafowekiko.pdfIn PDF document text
    • http://ivankotov.ru/img/lib/file/22856693705.pdfIn PDF document text
    • http://otoozevran.com/resimler/files/94109174451.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/652266ffce1e8e149f666eb208f3f501/1855878834.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16146a5bc45d93---85862002101.pdfIn PDF document text
    • http://china-engine.net/ckfinder/userfiles/files/24618484372.pdfIn PDF document text
    • http://rideabikenews.com/user_img/files/kuwatekikegipetiparedi.pdfIn PDF document text
    • http://alhegazgroup.com/userfiles/file/88136847048.pdfIn PDF document text
    • http://cortabellanews.com/userimages/malufenetoduju.pdfIn PDF document text
    • http://arcenevents.nl/site/upload/files/67530118682.pdfIn PDF document text
    • http://busto-wl.gattinonimondodivacanze.it/themes/userfiles/files/ponekumonaga.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/47690b68cf50d8228d4ad4c5fcd43761/781858551.pdfIn PDF document text
    • https://getracemirates.com/userfiles/files/88152722448.pdfIn PDF document text
    • https://aqua2go.pl/galeria/file/nivirekabuvuji.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=deep+things+to+say+to+someone+you+lovePDF 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_off0000e204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE204 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fa1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA1B 10880 bytes
SHA-256: 6a31ce494a8588851ac14a3163fd101869480cedcbc2ea86bac6591854f22808
font_02_sfnt_off00011320.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11320 16476 bytes
SHA-256: ff8f9c907bd4b5a396afb4b0586ef7f8a4dd0e9bf4ef9482c365dbf293d6d85b