Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d98538a4bd1083…

MALICIOUS

PDF

71.1 KB Created: 2022-04-06 20:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-28
MD5: a8e67dc11cdf6414b38e56e1ee8c8c76 SHA-1: 44909c23a0a05ad20e2c5f30a8a089fa18c408de SHA-256: c7d98538a4bd108329f785276b34e5885f976152aa4311162361d2b7f3672076
159 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yubit.co.za/YmrXLWy8?keyword=is%20google%20chrome%20secure PDF link annotation
    • http://gemmacapitalgroup.com/foto/file/33666512207.pdfIn PDF document text
    • http://topclinique.ma/kcfinder/upload/files/85489386885.pdfIn PDF document text
    • https://gijudopit.weebly.com/uploads/1/3/5/3/135321477/3176200.pdfIn PDF document text
    • https://10fci.org/userfiles/file/pikofikudalifonolifo.pdfIn PDF document text
    • http://alumcity.ru/userfiles/file/wepesorekan.pdfIn PDF document text
    • http://tesorosdelayer.net/imgs/images/files/gokiv.pdfIn PDF document text
    • https://www.huaikrachaohospital.go.th/assets/global/lib/ckfinder/userfiles/files/winodefilomuvamepizu.pdfIn PDF document text
    • https://kuwovuvonix.weebly.com/uploads/1/3/5/9/135971109/bujonusugegaxub.pdfIn PDF document text
    • http://yztools.com/images/upload/File/rifinovemodasugudomobo.pdfIn PDF document text
    • http://jiin-torng.com/uploadfiles/20220212203138.pdfIn PDF document text
    • https://www.cltservices.net/backoffice/kcfinder/upload/files/28044498233.pdfIn PDF document text
    • http://mtqindia.com/app/webroot/uploads/files/gokokepafule.pdfIn PDF document text
    • http://studioboscono.it/userfiles/files/rijuviluvunamelopef.pdfIn PDF document text
    • https://kolbandibileklik.com/resimler/files/zapixubu.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/7dcd5e1bf7bdf69e92a515340e415d03/reviwotezinipapar.pdfIn PDF document text
    • http://regmac.net/userfiles/files/29260985517.pdfIn PDF document text
    • http://modelseafarm.com/kweb/ckfinder/userfiles/files/bofadojesomenino.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/sigil.pdfIn PDF document text
    • http://www.zendogbeds.cz/products/files/jugigovo.pdfIn PDF document text
    • https://rekazisiw.weebly.com/uploads/1/3/0/8/130874265/157a56e2913.pdfIn PDF document text
    • http://aytekinpolatel.com/image/files/32420282034.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/nkj7jgevkdivegakhklabdot19/wodimixafofok.pdfIn PDF document text
    • https://iwnta.com/userfiles/file/61058720517.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_off0000b424.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b424.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB424 10272 bytes
SHA-256: 9a52ee71fbae8761f9df5ac0e47d8d88e5f8ba9d029557137a9669670c5a78af
font_01_sfnt_off0000cb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB3F 16748 bytes
SHA-256: 3d8da1bb70240084b64f79ce1962cf61fc69828171977e9dd4f4319f19ee2e32
font_02_sfnt_off0000f6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1