Malicious PDF — malware analysis report

Static analysis result for SHA-256 634290a5d04a31d4…

MALICIOUS

PDF

90.4 KB Created: 2022-04-14 06:37:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: 481b80bd9b9afe1deb2dfd9dcc6a25d4 SHA-1: 2e3b958cc8b95aac76175b167e072d5009a02a00 SHA-256: 634290a5d04a31d4055e16575535ae3693b6faed165262827665041fd384ddac
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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 http://erbamedica.org/userfiles/files/44491568572.pdf In PDF document text
    • http://www.globalconference.info/kcfinder/upload/files/dazab.pdfIn PDF document text
    • https://vigakamodibit.weebly.com/uploads/1/3/4/7/134770941/9681629.pdfIn PDF document text
    • https://zekorawuj.weebly.com/uploads/1/3/4/8/134862422/089c738505ca8a.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/zaxaganuxoligebegexad.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/zenejilobutosumog.pdfIn PDF document text
    • https://plagij.at/ckfinder/userfiles/files/megaxawunajujeboxidub.pdfIn PDF document text
    • https://xn----8sbkgjdl3aku5f.xn--07-6kc3bf4angc2g.xn--p1ai/files/files/99728245689.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/vudoxamanififumu.pdfIn PDF document text
    • https://giliruba.weebly.com/uploads/1/3/1/4/131483170/2ad331.pdfIn PDF document text
    • https://kibibobufusasi.weebly.com/uploads/1/3/4/6/134643218/xatoziwatewav.pdfIn PDF document text
    • http://tandprotheses.com/ckfinder/userfiles/files/42285064228.pdfIn PDF document text
    • https://bujopovuw.weebly.com/uploads/1/3/4/3/134390204/1554665.pdfIn PDF document text
    • https://sepuvomaxobaba.weebly.com/uploads/1/3/5/3/135311468/d33b32ffce683.pdfIn PDF document text
    • http://sor1310.com/userfiles/file/guwobug.pdfIn PDF document text
    • https://zedijonen.weebly.com/uploads/1/3/4/0/134018258/xugufokezuminajuxira.pdfIn PDF document text
    • https://ranilabat.weebly.com/uploads/1/3/5/9/135999147/gipadikitotaj_fupabebemu_mokafaret_fexamimabakar.pdfIn PDF document text
    • http://dolnoslaskialarmsmogowy.pl/imgturysta/files/72958352787.pdfIn PDF document text
    • https://xadonuxezi.weebly.com/uploads/1/3/4/1/134131919/6c46a1e34.pdfIn PDF document text
    • https://podar.co.za/YmrXLWy8?keyword=prison%20ramen%20doritosPDF link annotation
    • https://equalland.com/uploads/File/67310794175.pdfIn PDF document text
    • http://lehoangcctv.com/ckeditor/kcfinder/upload/files/94617329209.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_off0000e9b4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000e9b4.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B4 10364 bytes
SHA-256: 18ef49568579b66344af3bfe5da6feb622e2bd8145e73aba9b99698418e1581a
font_01_sfnt_off00010114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10114 16164 bytes
SHA-256: fd494554c7a7a2c4488382a78096c535ff133766c7221992be4f6a58596b2467
font_02_sfnt_off00011686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11686 17296 bytes
SHA-256: 5c8d78714c2283ad630df29ac26b457bdfae963d37e86975300a043777ebf2bb
font_03_sfnt_off000143ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143AE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1