Malicious PDF — malware analysis report

Static analysis result for SHA-256 79343f2fd82318a5…

MALICIOUS

PDF

82.5 KB Created: 2021-11-04 07:17:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-14
MD5: b3f983b370b1619512630ba1df7c237c SHA-1: 566ac5820e33048b269d72dd1f278ef53cd82222 SHA-256: 79343f2fd82318a5336121f60f53523bb2221b43da1e1af76e31f7ebf058f9eb
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/83b53b692bbded4f690f1c5f74fb3426/lelezebanikipipilifuxoviz.pdf In PDF document text
    • https://endobible.com/userfiles/file/36638228105.pdfIn PDF document text
    • https://ontogepszerviz.hu/editor_up/36867046422.pdfIn PDF document text
    • http://ural-resyrs.ru/data/file/88480372245.pdfIn PDF document text
    • http://hingliltd.com/userfiles/64626055840.pdfIn PDF document text
    • https://kham.vn/userfiles/file/62721156353.pdfIn PDF document text
    • https://tidaksusah.com/contents/files/55078495209.pdfIn PDF document text
    • http://retrievers.su/ckfinder/userfiles/files/74396739346.pdfIn PDF document text
    • https://aviatroglo.fr/IMG/file/43143792331.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161314e5f9d3cb---30782701086.pdfIn PDF document text
    • http://come2menorca.com/images/file/nisuwulivanaxunetalo.pdfIn PDF document text
    • https://datatech-int.com/userfiles/file/zutinaruxedi.pdfIn PDF document text
    • https://sergiomauri.com/images/file/25417410095.pdfIn PDF document text
    • https://trakyasoftavukatwebsitesi.demowebsiteleri.com/upload/files/41056093579.pdfIn PDF document text
    • https://sonerofset.com/userfiles/file/30813580218.pdfIn PDF document text
    • http://dostavka.markasib.ru/ckfinder/userfiles/files/8487023453.pdfIn PDF document text
    • http://xn--9i1b14l32gg2dsybq3b.com/upload/fckeditor/file/mataxogogigokezizow.pdfIn PDF document text
    • https://sherwoodchamber.org/ckfinder/userfiles/files/93747546687.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/3h1p0ches6ff9g3guibho0ibv1/26174693167.pdfIn PDF document text
    • http://heatexchangersolution.com/upload_fck/file/2021-9-14/20210914150038176507.pdfIn PDF document text
    • http://olympicburger1988.com/uploads/files/zufage.pdfIn PDF document text
    • http://poltinka.ru/userfiles/file/sizurefurijug.pdfIn PDF document text
    • http://www.synagoge-stommeln.de/ckfinder/userfiles/files/79868784948.pdfIn PDF document text
    • https://buffinvestment.com/upload/ckfinder/files/8663933586.pdfIn PDF document text
    • http://kostas.ibhellas.gr/uploads/_uploads/files/rufumujobewugiju.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/vItLtdF7Pec/uplcv?utm_term=become+ill+phrasal+verbPDF 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_off0000dc25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC25 10696 bytes
SHA-256: 0e1436f1b637ae95ac681529feac522af63a4636892bc29db6aaf02a47ce17fc
font_01_sfnt_off0000f470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF470 18180 bytes
SHA-256: 9d2d05e8a84929ea8b52301fc90e5a1a5b8fb79afa7d536427ef18a7cb613a18
font_02_sfnt_off00012425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12425 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1