Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e38459046f659a6…

MALICIOUS

PDF

81.4 KB Created: 2021-09-09 12:08:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 6fa4877a6b2305eda2faa8c2983e1119 SHA-1: ed84ebe8b6a02a8bfdc3255d14330be7da3fbf4a SHA-256: 6e38459046f659a65eff95ca8f3a9b21d1f885ceae8349eb180b92ca848eb37a
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple domains, some of which appear to be compromised WordPress installations or disposable hosting. The presence of a 'download button' lure further supports the phishing attempt. No scripts were extracted, but the overall structure suggests a phishing campaign aiming to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://quatanggiabao.com/images/uploads/files/fixawupodikesudixunek.pdf In PDF document text
    • https://gaadalagi.com/contents/files/pisomafegitukodoliriputer.pdfIn PDF document text
    • http://chiengthai.com/file_media/file_image/file/37571415228.pdfIn PDF document text
    • https://hilanguage-com-tw.triangle-design.com/files/98545634588.pdfIn PDF document text
    • https://tatvan.in/userfiles/file/bavikugegipupesamixus.pdfIn PDF document text
    • http://salon-urody-bellis.pl/images/file/nenoluvidutan.pdfIn PDF document text
    • https://ermolino.mebel18.com/uploads/files/kakopasalawonosirunu.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f01af10ec4---46172235963.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/161315b9372bcf---tibinifetilixovedixajume.pdfIn PDF document text
    • http://johnmichaelharrisonlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fopodukodegunazajexomo.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/qgq45eobqoqcmmtmk4h4okm0h6/zejiw.pdfIn PDF document text
    • http://cdenito.net/userfiles/file/94579256478.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613827d26fbb3---90314620879.pdfIn PDF document text
    • https://lrdreamteam.com/files/files/file/InfoProduct/file/1936966198.pdfIn PDF document text
    • http://winkeleninzundert.nl/uploadimages/files/xiwikatujoriruvawugowug.pdfIn PDF document text
    • https://powermailer.in/userfiles/file/75854202731.pdfIn PDF document text
    • http://hanasushi6.com/uploads/files/kumebovop.pdfIn PDF document text
    • http://www.kowel.com/ckfinder/userfiles/files/1630455888.pdfIn PDF document text
    • https://998.geektic.com/geektic/files/jazuvo.pdfIn PDF document text
    • http://hanasushipickup.com/uploads/files/25361006612.pdfIn PDF document text
    • http://www.asiacoservice.com/file/files/29860233546.pdfIn PDF document text
    • https://kstraders.com/userfiles/file/fujutepuwekokixefurud.pdfIn PDF document text
    • https://viceda.com/userfiles/file/guvovipikaronodolotapa.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/tuvarewo.pdfIn PDF document text
    • https://vicareyou.com/userfiles/file/55377116983.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=heavy+bus+simulator+mod+moneyPDF 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_off0000da3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF255 10820 bytes
SHA-256: 1e27185c7cf71e81730edb44be3b13ad12cc5adbf0660c0d512e07f640e357de
font_02_sfnt_off00010b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3F 17224 bytes
SHA-256: 07f1893611ca47984c2f70700bc982993001a130e6e80524299089a00ee23c71

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