Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd3afb85537ea3c…

MALICIOUS

PDF

69.6 KB Created: 2021-10-01 19:16:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26
MD5: 644d52737eb08f963487259a1a613773 SHA-1: 77fe473b11763777551b0369519d0e2798c646cd SHA-256: 3dd3afb85537ea3cffcb0a6c563606e43ad5a38c05c00fc7d169a62d59846ba6
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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 https://allytemp.ru/uplcv?utm_term=pic+of+android PDF link annotation
    • http://sinoscaform.com/upload/ckimg/files/202109101649394046.pdfIn PDF document text
    • https://vinadesigndanang.vn/uploads/image/files/dewisi.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141a0ef9b2d8.pdfIn PDF document text
    • http://gardena.crazyrockinsushi.com/uploads/files/bifodelabedide.pdfIn PDF document text
    • http://chamdure.com/DATA/files/22139619746.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/ec53235b2e7a93d0ca737125a28376d4/pigunadiwi.pdfIn PDF document text
    • http://bangtutrang.com/upload/files/27521742521.pdfIn PDF document text
    • http://vetcasatenovo.it/userfiles/files/93591113380.pdfIn PDF document text
    • https://vietnam-pump.com/userfiles/file/59928177766.pdfIn PDF document text
    • https://96662888.com/editor_upload/file/retopubumogerisarujenav.pdfIn PDF document text
    • https://slide-bearing.com/d/files/viwuxumonimesafem.pdfIn PDF document text
    • http://reopen911.info/media/file/nudofiwodixirupibu.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161408845f41af---mupasuzunibuful.pdfIn PDF document text
    • http://shacklefordlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/97751170628.pdfIn PDF document text
    • https://giridhareye.org/ckfinder/userfiles/files/64703434073.pdfIn PDF document text
    • http://rotarybrescello.it/userfiles/files/95791717811.pdfIn PDF document text
    • http://jamesandsons.ca/userfiles/file/47473415534.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/161359e71a000e---xunaf.pdfIn PDF document text
    • http://goldnumber.info/userfiles/file/jesarufipekadedud.pdfIn PDF document text
    • https://esvigo.com/upload/files/57252496092.pdfIn PDF document text
    • http://www.almansori-ye.com/almansorifiles/files/92933267260.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/161496ef996eae---19740577895.pdfIn PDF document text
    • http://sibzakon.ru/ckfinder/userfiles/files/dinowim.pdfIn PDF document text
    • http://arebiatours.com/uploads/files/volijeti.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613b469ecb8f2---wegoxuxutelujijapoj.pdfIn PDF document text
    • http://matras-devison.ru/upload/file/kufabopoxe.pdfIn PDF document text
    • 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_off0000b361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB361 10024 bytes
SHA-256: 57bec5dbb1ba4f8ba52a37154a636189133899f08ac5384feb5b1e43dbf4fbe5
font_01_sfnt_off0000c9ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e1c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C0 15592 bytes
SHA-256: eaf190b3071a5b1b8a4e3c2c39bf2c144894942fee9ff44fade75763a8c09228