Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2f0769b2b9410f…

MALICIOUS

PDF

72.5 KB Created: 2021-10-06 16:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: ef768cb3801478c7761aa31574c2a8a6 SHA-1: b232657195890b7acd129a32c9e35d9be528e14b SHA-256: af2f0769b2b9410f7a76a51e55dbdc4535e3772467205d7515f5933470254614
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612eb4c1e13f4---mibetatapuvupuwomovu.pdf In PDF document text
    • https://bahamianbrewery.com/ckfinder/userfiles/files/45842172790.pdfIn PDF document text
    • http://kondicionery-elektrostal.ru/upload_picture/file/3632657513.pdfIn PDF document text
    • https://alpasol.e-giant.net/upload/files/kuvol.pdfIn PDF document text
    • https://groupburuemas1.com/contents/files/fufeniro.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153521a29f96---18642869452.pdfIn PDF document text
    • http://skidubravy.sk/spravca/ckfinder/userfiles/files/56230292494.pdfIn PDF document text
    • http://www.northern-japan.com/image/upload/File/xigomikerupuxowojunasaj.pdfIn PDF document text
    • http://esistore.be/userfiles/file/29123011459.pdfIn PDF document text
    • http://librojuridico.com/aym_images/files/71839967660.pdfIn PDF document text
    • https://edusfera.pl/upload/file/kafubonigurikenavekizenad.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/e06728c162495b6cd7b3c8578fa39144/jonawitenokujefez.pdfIn PDF document text
    • https://alistairmills.com/ckfinder/userfiles/files/fubes.pdfIn PDF document text
    • http://thaoduocvn.com/userfiles/image/file/67756747163.pdfIn PDF document text
    • http://www.mostenpo.jp/userfiles/files/nodig.pdfIn PDF document text
    • http://banquat.com/userfiles/files/28321668526.pdfIn PDF document text
    • http://adwokaci-pila.pl/userfiles/file/25363642461.pdfIn PDF document text
    • http://futboltotal.net/images/files/84284514320.pdfIn PDF document text
    • http://dreamsurgerycn.com/ckupload/files/18580256548.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/zugifukigazapa.pdfIn PDF document text
    • https://tonere.shop/app/webroot/files/userfiles/files/77311870687.pdfIn PDF document text
    • http://afro-safari.com/upload/files/78351837249.pdfIn PDF document text
    • http://partnerplus30.ru/images/fornews/files/gikobekub.pdfIn PDF document text
    • https://el-tall.pl/pics/file/zemopokowipipujaput.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=sharp+pain+in+right+side+of+chest+that+comes+and+goesPDF 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_off0000b99c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB99C 16148 bytes
SHA-256: e662549461b27833b1094bda1db5a31c9a637351e420eb7b5141df23d46bc84c
font_01_sfnt_off0000e2a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABE 11096 bytes
SHA-256: ed5da11a226812740c940460c5d6f3a60d095ae7af7f690606d191f41d765375