Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d98af3e94c3aa5…

MALICIOUS

PDF

457.6 KB Created: 2022-01-11 17:20:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: c941a403b83faf7c5e5b9450e5b25b43 SHA-1: 472c4f5864f5ab07d2c96f2bfb519bc296fc815b SHA-256: c5d98af3e94c3aa5a5416a3aa6b85f639d10a2369bd0d9ff91d9a63ed229011a
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5902

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://infrive.ru/uplcv?utm_term=telugu+new+movies+tamil+dubbed PDF link annotation
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/ed421a2c85d78ad5a936b6929f4d7e65/fopok.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/wivevebuvopenajojep.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161913ed6bce1d---7052295389.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ualvvtp08ikqfrj09odhqvdl92/puviluzijo.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/bd0e320284488fd67f1b28b4e16fe6c3/51778095016.pdfIn PDF document text
    • http://quinta.cl/upload/files/53306065518.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/16185bc5ad86e6---37468904538.pdfIn PDF document text
    • https://futurefacesmiami.com/uploads/file/fetud.pdfIn PDF document text
    • https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1616200dd7e671---92407639880.pdfIn PDF document text
    • http://itineraire-consulting.com/ckfinder/userfiles/files/kosavef.pdfIn PDF document text
    • http://burragebrothers.org/demo/jolie/beta/userfiles/files/zoleputamovibotisudux.pdfIn PDF document text
    • https://kitapkaplama.com/upload/ckfinder/files/68030073309.pdfIn PDF document text
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16168d4b777052---61129338452.pdfIn PDF document text
    • http://malabarisproducoes.com/arquivos/files/milifan.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/161832d32cd391---letadetiterasu.pdfIn PDF document text
    • http://indianamartialartsfitness.com/flash/indianamartialartsfitness.com/file/76613846041.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619bb4f1df5be---20787199493.pdfIn PDF document text
    • http://merissahaymore.com/images/e/file/ruzem.pdfIn PDF document text
    • http://dejonghenico.be/sites/default/files/file/vosozotaroxezidaxuga.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/13569699909.pdfIn PDF document text
    • http://poliambulatorioargentina.eu/userfiles/files/pibiriz.pdfIn PDF document text
    • http://winteringlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/peditopewetixenixi.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/7atlfahcdl4oogikv7qjkght51/32281317071.pdfIn PDF document text
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/vophp33irqq3gg455uiqdrki25/dorupubej.pdfIn PDF document text
    • http://centroolosprato.it/userfiles/files/tijotivelepumale.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 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_off0006bd52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD52 10848 bytes
SHA-256: e6a94038cd60aa61f7d11ae6a7a432a8481286090ca6ea3a3915c30aca90f853
font_01_sfnt_off0006d63b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D63B 16656 bytes
SHA-256: b942724d8e31283aa87c98b747dd69c4d98321eb6372684ec21fe0029e11b17f
font_02_sfnt_off0007015f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7015F 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336