Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d55b3fd31ce385…

MALICIOUS

PDF

81.9 KB Created: 2022-03-30 21:03:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-27
MD5: 9b49846964f0a1053353316938dc4742 SHA-1: 7fd86b10c3b352ccc299e034650436f732b44bf9 SHA-256: c7d55b3fd31ce385fa7251153f8da096a50990b56afd1ca99fb41c88d43f8e09
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://fecuq.co.za/YmrXLWy8?keyword=measure%20what%20matters%20book%20summary%20pdf PDF link annotation
    • http://stavebni-firma.sarmo.cz/Images/file/sivunexidumi.pdfIn PDF document text
    • http://beautystyln.jp/uploads_file/files/89934389727.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621fb1a19cbda---kenozisurojodipumutefi.pdfIn PDF document text
    • http://hkwwta.org/userfiles/deguwinafiv.pdfIn PDF document text
    • https://ramowofotaro.weebly.com/uploads/1/3/1/6/131607053/jumatexukelavi.pdfIn PDF document text
    • http://damnoen.com/ckfinder/pho/files/36470060202.pdfIn PDF document text
    • https://skidnapping.com/uploadfiles/files/nefigapitenanuxonov.pdfIn PDF document text
    • http://zekidilektekstil.com/images_upload/files/pefelopesosigonabom.pdfIn PDF document text
    • http://php-lounge.de/userfiles/file/43921591894.pdfIn PDF document text
    • http://gusanhightec.com/userData/board/file/7982920973.pdfIn PDF document text
    • http://memisaslan.com/userfiles/file/83053459812.pdfIn PDF document text
    • http://discus-rus.ru/upl/file/modisalevevetijubonorabak.pdfIn PDF document text
    • https://longhungphat.org/Images_upload/files/pinokugelezosumadorog.pdfIn PDF document text
    • https://fisulujat.weebly.com/uploads/1/3/1/4/131454297/jeniruwadax.pdfIn PDF document text
    • https://lelewizarev.weebly.com/uploads/1/3/4/4/134489342/03354.pdfIn PDF document text
    • https://fekakekofum.weebly.com/uploads/1/3/4/6/134656499/pepebakiwaz-fodidowamuka-kejinexididasam-roneti.pdfIn PDF document text
    • http://take114.kr/FileData/ckfinder/files/20220320_83C5E47CF9DB8E3D.pdfIn PDF document text
    • http://www.oftalmed.com.br/files/ckeditor_custom/kcfinder/upload/files/60110893434.pdfIn PDF document text
    • https://ketulujuzix.weebly.com/uploads/1/3/4/6/134649002/1f1eaf58.pdfIn PDF document text
    • http://www.sanbernardinoverona.it/_admin/kcfinder/upload/files/76494646660.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 extracted file (font_00_sfnt_off0000db97.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000db97.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB97 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000f236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF236 17316 bytes
SHA-256: 40fcab7ecf3db0d52bc7b9abf8ff3a9879e92de5b4260306ee406edb1c6fe3a5
font_02_sfnt_off00011f90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F90 11044 bytes
SHA-256: 9924f93edfbce52c93078bd9d9668c31adbdd32ab0c428bd0dd751ac1a49d194