Malicious PDF — malware analysis report

Static analysis result for SHA-256 25cf8fdc5256bf64…

MALICIOUS

PDF

78.1 KB Created: 2022-04-09 08:35:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: de2aac2db86246c63bfc95d79d0ee21a SHA-1: 95c891e82e5a752d2f1c34f614fa32d7fe84338c SHA-256: 25cf8fdc5256bf64be53d9f2a7ff0dc4aed608b6d087f76b6a3aec58479b561a
266 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 8

  • 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.
  • 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://dovewonarada.weebly.com/uploads/1/3/4/6/134672256/refisonabu.pdf In PDF document text
    • https://creteservices.com/FCKeditor/userimages/file/gulonalewepin.pdfIn PDF document text
    • https://buonoantonio.it/userfiles/file/gakewefigapekukamonemotir.pdfIn PDF document text
    • https://ferijadupegol.weebly.com/uploads/1/3/4/7/134705138/kivafov-bonexi-tugijirug.pdfIn PDF document text
    • https://agregadoschucuri.sinecsas.com/ckfinder/userfiles/files/sedifelojunamozu.pdfIn PDF document text
    • https://munazuzane.weebly.com/uploads/1/3/4/3/134350045/lamigep_takebojage_baxuwenenoki.pdfIn PDF document text
    • https://lokulubebu.weebly.com/uploads/1/3/1/8/131856352/42012ac059a.pdfIn PDF document text
    • https://fubuworarakej.weebly.com/uploads/1/3/4/1/134108970/risojalizigedi_mebomazake_tiderewixisigol_sarudumorep.pdfIn PDF document text
    • https://kebolegenadudus.weebly.com/uploads/1/3/1/4/131454121/kigun-libitul-zogexoki-nudunapew.pdfIn PDF document text
    • http://wsospice.org/uploads/userfiles/file/file/93981401294.pdfIn PDF document text
    • https://vajoribenokajug.weebly.com/uploads/1/3/4/7/134713142/vufof.pdfIn PDF document text
    • https://hygienika.sk/userfiles/file/93901931241.pdfIn PDF document text
    • http://cyc-catering.pe/disac/userfiles/file/zijal.pdfIn PDF document text
    • https://fofagova.weebly.com/uploads/1/3/4/3/134313529/063c9791.pdfIn PDF document text
    • http://davidhammerstein.org/userfiles/file/febarowomepuzob.pdfIn PDF document text
    • https://nezivubu.weebly.com/uploads/1/3/1/3/131384481/gagufigijiduwid-zijasujo.pdfIn PDF document text
    • https://latabiwot.weebly.com/uploads/1/3/4/6/134612911/dazixilipanaluje.pdfIn PDF document text
    • http://spaconsulting.pl/userfiles/file/25633662702.pdfIn PDF document text
    • https://connatlas.com/home/conn/public_html/ckfinder/userfiles/files/dozana.pdfIn PDF document text
    • http://aimecostruzioni.it/userfiles/files/vubezanikon.pdfIn PDF document text
    • https://nuruwojodemaf.weebly.com/uploads/1/4/1/3/141340651/8096203.pdfIn PDF document text
    • https://nifipidege.weebly.com/uploads/1/3/4/6/134677229/48223.pdfIn PDF document text
    • https://budafamilefa.weebly.com/uploads/1/3/1/4/131452884/1479ad70d.pdfIn PDF document text
    • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/75751283548.pdfIn PDF document text
    • https://mifuj.co.za/YmrXLWy8?keyword=how%20many%20terror%20attacks%20in%20the%20us%20since%202001PDF link annotation
    • http://jumpstart.mobi/ckfinder/userfiles/files/kijubidogogofogagi.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_off0000c990.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c990.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC990 11124 bytes
SHA-256: 45e11aff5113537128cc35b60efad6a1c318ebf599af9e268a68a3bb691d7007
font_01_sfnt_off0000e37c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37C 17468 bytes
SHA-256: c85ca0b1bf11c00166c980896439cddd6031f7ad8ea11675c13f437374879006
font_02_sfnt_off00011162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11162 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1