Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ffa3627a71834b…

MALICIOUS

PDF

82.7 KB Created: 2021-10-16 07:50:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: ec332e03fe299298854fa5676555adca SHA-1: 3287077a73e5eb02a59c9da9cb0ebd6c90e1bab9 SHA-256: f2ffa3627a71834b992d77d2d5e0ba71a1a3fdfda5df1f0da9ac68ccb5b78244
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://laborke.ru/uplcv?utm_term=inclined+plane+experiment+pdf PDF link annotation
    • http://swvocal.com/data/se2/file/1945678324.pdfIn PDF document text
    • http://emachn.com/data/attachment/file/31193097777.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/80471986195.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/rukasagunab.pdfIn PDF document text
    • http://dolphinegypt.net/userfiles/file/10225791756.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1616166eb30ee8---10686227296.pdfIn PDF document text
    • https://hunghiephuylog.com/upload/files/xofasurerowi.pdfIn PDF document text
    • http://aprt1day.ru/file/logowerugumulakipamero.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/e85166937361d464506cb1442a209258/wurikeba.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/16160d8359fcd2---zirepulevebut.pdfIn PDF document text
    • http://bio-scan.com/userfiles/file/noziteduporipagatitob.pdfIn PDF document text
    • http://tochalco.com/uploads/files/pubibizuzepebunasimired.pdfIn PDF document text
    • https://ytovietnam.net/ckfinder/userfiles/files/fonivubuvetobizigodinom.pdfIn PDF document text
    • http://hcbarrett.com/user_area/file/mojexirowegoladepetop.pdfIn PDF document text
    • https://miet.hu/kepek/wipamukanabipipozisar.pdfIn PDF document text
    • https://jetaime-shop.com/files/32742400980.pdfIn PDF document text
    • https://coevent.ru/upload/files/8253695927.pdfIn PDF document text
    • http://jfhcoaching.nl/userfiles/files/60287279419.pdfIn PDF document text
    • http://bsa.by/ckfinder/userfiles/files/26114331085.pdfIn PDF document text
    • http://cokhixnktientien.com/Images_upload/files/69654753074.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/806llgtfqqp19qkntg8keieiif/zetosawosemimukujivasog.pdfIn PDF document text
    • http://sgrappresentanze.eu/userfiles/files/mezob.pdfIn PDF document text
    • http://hueide.com/upload/files/tixewipakogadofud.pdfIn PDF document text
    • http://autostyle-japan.com/js/upload/files/bekibusiwefakajutojow.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16166903559f87---kamejusivuwip.pdfIn PDF document text
    • https://guanlai.tw/uploads/files/202110130013284296.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_off0000dd2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2B 18280 bytes
SHA-256: 3c87f1cd3159ae68146d0d2e8e24747528fba22cef573086ef035b3d2204a37a
font_01_sfnt_off00010d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D53 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001256a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1256A 10548 bytes
SHA-256: 94b62ebfc4e57c72b88bc93c9e0d63859c18c243a313191e2608ad0f1faaf946