Malicious PDF — malware analysis report

Static analysis result for SHA-256 af27758f668df11c…

MALICIOUS

PDF

69.4 KB Created: 2021-10-04 03:52:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: e9366375d545915745da7e0e6082fa2e SHA-1: 49539ddaf1579368a6cdfc39efc9def6bf03b582 SHA-256: af27758f668df11c8bccde3f1c8a821d94a8c341459dfb9723ff30bd548d5a16
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://allytemp.ru/uplcv?utm_term=kgf+chapter+1st PDF link annotation
    • http://dreesmann-foto.de/userfiles/file/48033070666.pdfIn PDF document text
    • http://patrick-jardinage.fr/ckfinder/userfiles/files/nojilebeviposoxo.pdfIn PDF document text
    • http://rowerowaszkola.pl/imgturysta/files/3746232799.pdfIn PDF document text
    • https://minhvuongthuphap.com/upload/ck/files/zibebizawo.pdfIn PDF document text
    • http://rungruangsteel.com/public/upload/userfiles/files/walupedirudalituzil.pdfIn PDF document text
    • http://pincailight.com/zk/UploadFile/file/2021092711542873499.pdfIn PDF document text
    • https://matfreklam.com/calisma2/files/uploads/korutusudijaxepuzokazuwux.pdfIn PDF document text
    • http://otestmanager.com/club/data/userfiles/file/20210927215343.pdfIn PDF document text
    • http://moestuinwebshop.nl/userfiles/file/seperaxufo.pdfIn PDF document text
    • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/82013022760.pdfIn PDF document text
    • http://swaving-stalinrichting.nl/ckfinder/userfiles/files/tigixavinuwu.pdfIn PDF document text
    • http://bangdinhphucat.com/quangbasanpham/app/webroot/upload/image/files/damikajojonefuzazore.pdfIn PDF document text
    • https://www.loisirs-auto-occasion.fr/ckfinder/userfiles/files/76634024194.pdfIn PDF document text
    • http://chiesamadremarsala.eu/userfiles/files/35162241329.pdfIn PDF document text
    • http://cuanhavesinh.com/userfiles/file/sanezematiled.pdfIn PDF document text
    • http://ceraunavoltapizzeria.it/userfiles/files/gowugikekovi.pdfIn PDF document text
    • http://yearbookplus.com/uploads/ckfinder/files/39531677822.pdfIn PDF document text
    • http://3qbuy.com/CKEdit/upload/files/58962769665.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20211004075448.pdfIn PDF document text
    • http://njuhome.pl/ckfinder/userfiles/files/27664666037.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/gulasimorat.pdfIn PDF document text
    • http://homeshopeez.com/uploaded_files/userfiles/files/53209710135.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/16151386a7b65e---53509532705.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_off0000b1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1C1 10440 bytes
SHA-256: d2e5e2b54ee82a81595ef905c0dcfcfcd72c7810211b86cb69a8e61bc455e5bd
font_01_sfnt_off0000c9b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B0 15224 bytes
SHA-256: a8679ba6c0efc80a3694ad00bbde97aafc7a7633da8848d895216b68af7386f1
font_02_sfnt_off0000effa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1