Malicious PDF — malware analysis report

Static analysis result for SHA-256 4259a31364aad012…

MALICIOUS

PDF

138.2 KB Created: 2021-12-31 05:01:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: b168d941032d425478fe3dff116dff4e SHA-1: 0dfa9f446026f727d1f7861d101a257906a7f7ea SHA-256: 4259a31364aad01225c0282c90cb54b92a1dddb1c736eeb68632d061582c0251
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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 http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/161cdb32284e50---32394767819.pdf In PDF document text
    • http://mastrodibaglio.it/userfiles/files/zeninezobibutevi.pdfIn PDF document text
    • https://asmitahrgroup.com/ckfinder/userfiles/files/50706084137.pdfIn PDF document text
    • http://galsabino.it/userfiles/files/61818106968.pdfIn PDF document text
    • https://damsindia.org/admin/uploads/file/gojukepuraniduvawesosi.pdfIn PDF document text
    • http://rc-saty.cz/gais/image/file/rijukovodoxumojegaxilodom.pdfIn PDF document text
    • https://www.opsclown.it/ckfinder/userfiles/files/10873597483.pdfIn PDF document text
    • http://schubert-hh.de/image/file/zotuwekewugajer.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/f5e6710ac86452c77b1484f1d39928fb/vijovarogorelamatetafu.pdfIn PDF document text
    • http://www.silverskilled.com/gateway/kcfinder/upload/files/86199805405.pdfIn PDF document text
    • https://clubesolbra.com/uploads/files/74422774321.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/jenedogofotozeno.pdfIn PDF document text
    • https://newsru.md/upload/userfiles/files/43435936117.pdfIn PDF document text
    • http://cleversystems.ru/userfiles/file/83207265323.pdfIn PDF document text
    • http://zhouzhuanx.com/v15/Upload/file/2021932044535764.pdfIn PDF document text
    • http://cmtl.in/uploads/userfiles/file/file/39159857471.pdfIn PDF document text
    • https://jensbrode.de/files/file/sowinozekifonokoruxajani.pdfIn PDF document text
    • http://gancza.pl/userfiles/file/nivelajofulek.pdfIn PDF document text
    • https://ratsimae.ee/media/contents/file/97109462289.pdfIn PDF document text
    • https://sananselmo.com/wysiwygfiles/file/wivotogagirovob.pdfIn PDF document text
    • http://julianina.dk/upload/file/sukubipuxoxidiliwikafapas.pdfIn PDF document text
    • http://littlepearlbooks.in/data/eimages/file/wosukuvigajuxokimesugofed.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/27716138328.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/1hHberoKktI/uplcv?utm_term=bsplayer+android+greek+subtitlesPDF link annotation
    • 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_off0001b96a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B96A 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0001d00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D00E 11064 bytes
SHA-256: 9f4a2de657d5fda989cf5e6ba8173026324ba0480fd6c812fdf0ee8fdc717996
font_02_sfnt_off0001e996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E996 19192 bytes
SHA-256: 8281c8cac217f26fd096e9407f34171fc2f58f862665b82c4ad5d7d744149338

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