Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61b61a460c17ce9…

MALICIOUS

PDF

67.4 KB Created: 2022-04-06 18:37:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 68558c6416b013458473da2d66560958 SHA-1: 20a2e1055bfde33e3d958b044d472e0b1d226e8c SHA-256: b61b61a460c17ce9492fdcdcbdd07ed88217a61b31e94c08f802a6fe8d678729
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://firsttimehomebuyerstudy.com/images/file/vafoxifivamujafegofavik.pdf In PDF document text
    • https://thenovgorodspaceship.andreirozen.com/images/files/5297452655.pdfIn PDF document text
    • https://sirubiruxegame.weebly.com/uploads/1/3/4/5/134581195/586162.pdfIn PDF document text
    • http://wittsend.com/userfiles/file/86254179267.pdfIn PDF document text
    • https://ronumotesagazuw.weebly.com/uploads/1/3/4/3/134373959/xaketebixob-mutekilemana.pdfIn PDF document text
    • https://vudulami.weebly.com/uploads/1/3/5/9/135964857/5228616.pdfIn PDF document text
    • https://zizowotedudoma.weebly.com/uploads/1/3/4/6/134641453/9874c.pdfIn PDF document text
    • https://kidogotetivi.weebly.com/uploads/1/3/4/3/134375399/58dee088f2758d.pdfIn PDF document text
    • https://asesoriagade.com/app/webroot/files/files/15180588222.pdfIn PDF document text
    • http://crislbd.com/public/admin/assets/ckeditor/kcfinder/upload/files/15614672009.pdfIn PDF document text
    • https://mobasukirogejus.weebly.com/uploads/1/3/1/4/131453019/2167f518f45f23.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fd3e79b305c---18918079752.pdfIn PDF document text
    • https://retelajipubo.weebly.com/uploads/1/3/4/7/134700068/salisus.pdfIn PDF document text
    • https://lukajupuxeburi.weebly.com/uploads/1/3/4/6/134630189/3272589.pdfIn PDF document text
    • https://todarezete.weebly.com/uploads/1/3/4/6/134650749/zogiwejetirutixuji.pdfIn PDF document text
    • https://suluxeposinugu.weebly.com/uploads/1/3/4/6/134634013/8360452.pdfIn PDF document text
    • https://pegutezupo.weebly.com/uploads/1/3/2/7/132740329/votutefelubuxixo.pdfIn PDF document text
    • https://noble-program.site/js/ckfinder/userfiles/files/nitote.pdfIn PDF document text
    • https://demepitogiwod.weebly.com/uploads/1/3/4/0/134097880/vegewigapibi-zisafu-banamabatagul.pdfIn PDF document text
    • https://bilewemebit.weebly.com/uploads/1/3/5/9/135964156/4d44431151.pdfIn PDF document text
    • https://yubit.co.za/YmrXLWy8?keyword=stihl%20fs%2055%20rz%20parts%20diagramPDF link annotation
    • http://geshome.co.jp/cmsdesigner/kcfinder/upload/files/67358143268.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_off0000a486.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000a486.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a486.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA486 16036 bytes
SHA-256: 147db2fd78485bcd684c76b45f0d8508f74c955234bce547121e52d5b0d3d926
font_01_sfnt_off0000ce17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE17 10856 bytes
SHA-256: 0ac65b04ab06fcdafc292b37594f0a59a53bb04fa61e489b8c9ba580dd4f8f2d
font_02_sfnt_off0000e6f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1