Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f3c91c518229899…

MALICIOUS

PDF

86.8 KB Created: 2022-04-06 03:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-03
MD5: 73ac631b30b3ac8ee438cdfe030ddf36 SHA-1: 373f1117c9ae797342bf59812b5826fa32b97287 SHA-256: 5f3c91c518229899910db6f44900b2d523336ca1b6a2cc807e67f08e607e4e8e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://colod.co.za/YmrXLWy8?keyword=dell%20optiplex%20790%20sff%20power%20supply%20replacement PDF link annotation
    • http://design-klasse.de/ckfinder/userfiles/files/66302242183.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2022-2-12/20220212101148676453.pdfIn PDF document text
    • https://lowijagaji.weebly.com/uploads/1/3/4/3/134394878/devomikelagalev-dewudalawe-ninilefotoxi-voxedazatug.pdfIn PDF document text
    • https://loveriremuro.weebly.com/uploads/1/4/1/3/141383626/juxewe.pdfIn PDF document text
    • https://alsharqcc.com/userfiles/files/50115813954.pdfIn PDF document text
    • http://busankid.com/webfiles/board/file///tabatedogubebojotojanetuv.pdfIn PDF document text
    • https://bubafoxir.weebly.com/uploads/1/3/0/8/130874260/riwiwoxezuramidaku.pdfIn PDF document text
    • https://kanoritixuvu.weebly.com/uploads/1/3/4/8/134874131/7636349.pdfIn PDF document text
    • https://arnetbilgisayar.com/upload/ckfinder/files/bofemabu.pdfIn PDF document text
    • https://gesusetinor.weebly.com/uploads/1/3/4/6/134685025/subew.pdfIn PDF document text
    • http://ferbogar.com/assets/kcfinder/upload/files/sasejegajix.pdfIn PDF document text
    • http://cinstech-inspect-survey.com/fckeditor_userfiles/file/22968337127.pdfIn PDF document text
    • https://fidojosamesevuf.weebly.com/uploads/1/3/4/5/134594598/tukasevomux_furabuzimamim_bebapirow_dijipoz.pdfIn PDF document text
    • https://duxubekuzew.weebly.com/uploads/1/3/4/5/134506612/pavewoxefupujif.pdfIn PDF document text
    • https://tavikumor.weebly.com/uploads/1/3/4/4/134476146/bimolelu.pdfIn PDF document text
    • https://dowogejur.weebly.com/uploads/1/3/5/9/135992185/662da.pdfIn PDF document text
    • https://vibupawovilopi.weebly.com/uploads/1/3/4/3/134377541/gufuxetudaloxa-norazar.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_01_sfnt_off0000eef4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_01_sfnt_off0000eef4.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aa88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA88 23004 bytes
SHA-256: f151c8c7594512de8c50069bb23583529c9eb2837099fc8c85d3e0366937c264
font_01_sfnt_off0000eef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF4 16420 bytes
SHA-256: e86d2de57c694f37d994532a785f8e887c113a91dcbd8a490d2bab2560e30be3
font_02_sfnt_off000119a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119A4 11384 bytes
SHA-256: c5bee7b592c4ad2437bd13c854169f93d876e8dab18548f9edc0380293013474
font_03_sfnt_off000134a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1