Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8764c0cec0eba74…

MALICIOUS

PDF

77.9 KB Created: 2021-08-03 20:31:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: a625659dd609a9cbbbe7222147c084db SHA-1: ab94d2a7ef451feadaea95472c95ef5a22681589 SHA-256: f8764c0cec0eba74ade3f3adbe85fac214121e9f021bad2c315e6ff456e4780c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://yilip.net/userData/board/file/wijifewowora.pdf In PDF document text
    • http://fabiocaronearchitetto.com/userfiles/files/vanekamafuwubejuniren.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1607f76096c652---panasavotevevozuno.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1263acd5c---vumimojilozafa.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/gcqj9ckrcr5r1pra7adqrg3nnf/dovivenob.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/8ac6bbd29698f39fdb7d224af1dc61b9/neramakaval.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608848f0eaf27---vimirutinixowikokezobu.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/2u7ja0k4fsd98qnk4iud1ast9u/lewapegovuragutopewoxewo.pdfIn PDF document text
    • http://budoprojekt.eu/obrazy/file/garisimuvaw.pdfIn PDF document text
    • http://schokozentrale.de/idata/sugawisabiziroge.pdfIn PDF document text
    • http://avonsteel.com/UserFiles/file/77205908177.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ac544ae4df8---sopejavevifoziwi.pdfIn PDF document text
    • https://digireg.nz/upload/91086513445.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/4jrpc2fgcp3s6i647fitj9tso2/dugodapudunijuju.pdfIn PDF document text
    • http://gtshotel.it/images/file/zipegodetusalo.pdfIn PDF document text
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/5vglk1rolp9uchue5rkrhdkpd7/taropenevi.pdfIn PDF document text
    • http://zdrowejaja.com/Upload/file/37965990224.pdfIn PDF document text
    • https://bikeid.net/ckfinder/userfiles/files/69789003548.pdfIn PDF document text
    • http://grandp.ru/userfiles/file/4855300638.pdfIn PDF document text
    • https://vieclamxaydung24h.com/upload/files/zunugopes.pdfIn PDF document text
    • https://foxtailmag.net/wp-content/plugins/super-forms/uploads/php/files/8388a3b92d2579fe6b2d185910595b9c/lupigofugojezovanoruk.pdfIn PDF document text
    • http://koreadramatour.com/FileData/ckfinder/files/20210710_94CA3F917278AD20.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ffbf514c782---nuxijabekojapudibu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=speedball+textbook+pdf+downloadPDF link annotation
    • http://janyska.home.pl/_mjanyska2013/fotki/file/zijefexamevopogozotalon.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_off0000cbd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD7 17704 bytes
SHA-256: 6af7dfa854aa88cdbd7ad65c3dd6eb73d56bb02159ee4b0986d9696e7c88aebd
font_01_sfnt_off0000f8e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E6 10628 bytes
SHA-256: 001c5cac1d07e86742de5d3cb6e50f5be2a8809878ac10535355c9c51ba0528c
font_02_sfnt_off0001113b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1113B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1