Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe1d878757831d8…

MALICIOUS

PDF

84.7 KB Created: 2022-04-08 08:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-24
MD5: 2892b802c2f942bdc623fd66da6613e4 SHA-1: 88144587d9896ca2af9625818859124134689b9c SHA-256: cbe1d878757831d82e0633f1dec0ec18a3c28ce83dc8b8b543245b5f38ba85ab
286 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 9

  • 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.
  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://lovig.co.za/YmrXLWy8?keyword=vocabulary%20workshop%20level%20c%20unit%203%20synonyms%20and%20antonyms%20answer%20key PDF link annotation
    • https://rofasaxoropop.weebly.com/uploads/1/3/5/3/135316675/3ad53a42.pdfIn PDF document text
    • http://interreg-ipa-husrb.com/downloads/minalasagokuzan.pdfIn PDF document text
    • https://zewevenetox.weebly.com/uploads/1/3/4/4/134477768/miwir.pdfIn PDF document text
    • http://wignaccent.com/FCKeditor_2.6.3/userimages/file/20220331080927.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/58204173691.pdfIn PDF document text
    • https://fozipapuratub.weebly.com/uploads/1/3/6/0/136088586/ridefenajevumikaf.pdfIn PDF document text
    • http://www.bufolari.com/public/immagini/file/bupifajuf.pdfIn PDF document text
    • https://xuxomesepek.weebly.com/uploads/1/3/4/6/134681539/gasalurasi.pdfIn PDF document text
    • https://posesisex.weebly.com/uploads/1/3/5/3/135332701/7702467.pdfIn PDF document text
    • https://bakofusu.weebly.com/uploads/1/3/2/3/132303024/1ac179753.pdfIn PDF document text
    • https://kemadevuweseroz.weebly.com/uploads/1/3/4/8/134878187/zujuw.pdfIn PDF document text
    • http://cvc.ochodnica.sk/userfiles/file/73198994891.pdfIn PDF document text
    • https://vapuwunenerupig.weebly.com/uploads/1/3/4/7/134727873/rusefefogel_vokulow.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/162213f2fc68a1---46273486407.pdfIn PDF document text
    • https://muwidewosavuli.weebly.com/uploads/1/3/4/4/134435377/3ba0637d9896df.pdfIn PDF document text
    • https://rizenorugeworo.weebly.com/uploads/1/3/4/3/134379336/4aa7488032e637.pdfIn PDF document text
    • https://gokefezenomi.weebly.com/uploads/1/3/4/0/134040807/toxamus.pdfIn PDF document text
    • https://bobitakakafaze.weebly.com/uploads/1/3/5/2/135297082/6019d494c00870.pdfIn PDF document text
    • https://bivesazi.weebly.com/uploads/1/3/4/6/134652180/5476670.pdfIn PDF document text
    • https://ganunuzarije.weebly.com/uploads/1/3/4/5/134518475/lasoja.pdfIn PDF document text
    • https://sijovupomim.weebly.com/uploads/1/4/1/2/141253998/koxiwipopuwavad.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/asnjfkcav6k3v0dqh0vnvclie5/6107829227.pdfIn PDF document text
    • http://mustang.tom.ru/jsplugins/ckfinder/userfiles/files/serojesumanijux.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_off0000e18a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000e18a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e18a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18A 11520 bytes
SHA-256: 99bfb7037cfb7b4466ec7b8e82a32766a5948e235061e297cc963864314d789d
font_01_sfnt_off0000fc8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC8C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001149e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1149E 17344 bytes
SHA-256: 536364cbd7e857599b0385893440ec1b92aff756b1c463440b76185ec832c8af