Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8d7b3d71c94c0f…

MALICIOUS

PDF

80.9 KB Created: 2021-10-28 01:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: ab4b926b9575b3ea03c47895809e3086 SHA-1: 612d2c5e0eca8b5585842fb7e0d3e63dd6ed95df SHA-256: 5d8d7b3d71c94c0f1c90dc0823a852618991abd2a1909b813948a7b9007a5214
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://toyteepee.com/uploadfiles/file/2109100728259749346v2zga.pdf In PDF document text
    • http://transgusto.ch/userfiles/file/panevabuvaxetu.pdfIn PDF document text
    • http://chpcentre.com/files/file/14041231953.pdfIn PDF document text
    • https://gamepinleri.com/calisma2/files/uploads/36743281225.pdfIn PDF document text
    • http://mkbeauty.vn/luutru/files/66537981085.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16164fef5272f2---53432856707.pdfIn PDF document text
    • http://llux.vn/uploads/files/58112723061.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/536c51607177314c28f10feb01f0d541/kikovizuwotidubexudawabe.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161543ebde3c25---fawurukivija.pdfIn PDF document text
    • http://rockpapersun.com/upload_mce_image/file/16233549005.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/10b31e20bb8de3f236d8ec7aef9a20e5/rusex.pdfIn PDF document text
    • http://matchedtubes.de/userfiles/file/28987273024.pdfIn PDF document text
    • http://royalleasingny.com/admin/images/file/zibanavir.pdfIn PDF document text
    • http://tuzy.pl/Upload/file/25905547498.pdfIn PDF document text
    • http://fszhenjia.com/upfolder/e/files/20211023011523.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/269e5fa57af04f91118ab659976ee7ed/fivexijibonulixinakode.pdfIn PDF document text
    • http://puisan.ru/uploads/file/waninefikituledomitomuxer.pdfIn PDF document text
    • https://russiancosta.ru/ckfinder/userfiles/files/23022825933.pdfIn PDF document text
    • http://shyjjc.com/v15/Upload/file/20219231424343060.pdfIn PDF document text
    • https://majubesar.org/contents/files/teduvitebezizopuwokilavol.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/161753d882e8b6---54263802898.pdfIn PDF document text
    • http://fszhenjia.com/upfolder/e/files/20210917080426.pdfIn PDF document text
    • https://5974293.pasarantogel.com/contents/files/96533030897.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/D9plVHj2VOU/uplcv?utm_term=airport+security+colostomy+bagPDF 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_off0000d73a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73A 10948 bytes
SHA-256: 5003354972e29cb0b8cb81bf598e7cbbf749201cbb4413f38d78061a3bc78d39
font_01_sfnt_off0000f082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF082 17692 bytes
SHA-256: c1a053211153954e1162c99a729eda9405689ce60bedb34fe866dfabed92b2e0
font_02_sfnt_off00011e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E05 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1