Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8aaa756958a86e…

MALICIOUS

PDF

101.5 KB Created: 2021-08-23 16:26:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: e936af8f8745252f248484abe93c73c0 SHA-1: 5a5b930d05cccd37e51684783e98785055350a2d SHA-256: cb8aaa756958a86e8dc903d05c2ea2e9ad6d08f14b790e76a76a7e2e0592268b
181 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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 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.
  • 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.
  • 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://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/75eeb7cc0479115a6651fb771386bce0/xowadikorim.pdf In PDF document text
    • http://tahyuh.com/uploads/files/202108200133394073.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160987ffe18e86---wibazexiboto.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160807dbbdfe11---50150419511.pdfIn PDF document text
    • https://szekszardportal.hu/userfiles/file/ketuzalagudope.pdfIn PDF document text
    • http://sineadstone.com/userfiles/file/87612205241.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3302e33fbb---pamatunekewol.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/41a06e75c285d9ed2026044ee5a489c9/vepakutojez.pdfIn PDF document text
    • https://ipic.vn/userfiles/file/wadaxitakuzisepoxaxab.pdfIn PDF document text
    • https://medtek.vn/storage/file/midobezudoxode.pdfIn PDF document text
    • http://esejsc.com/upload/files/95606210256.pdfIn PDF document text
    • http://antwerp-reefer-tournament.be/argt/files/85902026897.pdfIn PDF document text
    • http://bielwod.com/userfiles/file/bokowegapiwaji.pdfIn PDF document text
    • http://nacyc.jp/Upload/file/nupetosix.pdfIn PDF document text
    • http://studiosimonepantaleo.it/userfiles/files/96709071855.pdfIn PDF document text
    • https://cursosadistanciayonline.com/medios//files/33675307949.pdfIn PDF document text
    • http://malabarisproducoes.com/arquivos/files/18558670341.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/10d3fa76feb38e57dffe74401c3dacca/60428503846.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/17c1be3a1463456e07488c1df6723bc0/85002358862.pdfIn PDF document text
    • http://mamnonhieutrung.edu.vn/ckfinder/userfiles/files/devesaxapegimepupisa.pdfIn PDF document text
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/a7027264f16a726bbb0379f4c0b2a9fb/80818010401.pdfIn PDF document text
    • https://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/5210c8eaf20d946f7a426c008c7af24c/58777094055.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=the+other+woman+2014+123moviesPDF 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 extracted file (font_00_sfnt_off000124e9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000124e9.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000124e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124E9 18596 bytes
SHA-256: 5fb6460b839efe0787481eb8810f1a39b8049a69df6399056bedd06c24f04ae3
font_01_sfnt_off000155dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00016df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DF4 10988 bytes
SHA-256: e036416ad80ecc1994da1277d4bf755d089818615a0f215f14c7fb6950bfb687