Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b758e620d92f90…

MALICIOUS

PDF

346.3 KB Created: 2022-04-08 16:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 3735dc872ccd2d851ba92c1bfb35073b SHA-1: f729e877006ffd8f74aa6a9cf2024fc2e9864027 SHA-256: 88b758e620d92f9099638ca4e1d62644933b9181e9969f0247b9267630d81343
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7135

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zumavekuganupa.weebly.com/uploads/1/3/4/3/134366180/89f1106.pdf In PDF document text
    • https://lugobanupup.weebly.com/uploads/1/4/1/3/141341525/fajovibov.pdfIn PDF document text
    • https://nera.net/css/other/ckeditor/kcfinder/upload/files/witax.pdfIn PDF document text
    • https://lokowukaf.weebly.com/uploads/1/3/4/3/134315315/a3b8a.pdfIn PDF document text
    • http://strandkrabbe-hohenfelde.de/sites/default/files/files/vewawabutevubamududipe.pdfIn PDF document text
    • http://ieltsadd.ir/cache/fck_files/file/tokekoragizevanenuvev.pdfIn PDF document text
    • http://l-max.ru/userfiles/file/tumiwuse.pdfIn PDF document text
    • https://xejuzofuna.weebly.com/uploads/1/3/4/8/134858051/422504.pdfIn PDF document text
    • https://lopodudox.weebly.com/uploads/1/3/4/3/134339354/1796573.pdfIn PDF document text
    • https://ralugegab.weebly.com/uploads/1/3/4/8/134888835/dolodidi.pdfIn PDF document text
    • https://rirofogarerena.weebly.com/uploads/1/3/0/7/130775169/94b39.pdfIn PDF document text
    • http://kawarulabo.com/app/webroot/js/kcfinder/upload/files/zulora.pdfIn PDF document text
    • https://xixemoxutosiseg.weebly.com/uploads/1/3/4/4/134473276/2637659.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/susatonotebimisuj.pdfIn PDF document text
    • https://rinadulig.weebly.com/uploads/1/3/0/7/130739308/ritowi.pdfIn PDF document text
    • https://melenoradu.weebly.com/uploads/1/3/4/3/134340649/jogofelagomobitodo.pdfIn PDF document text
    • https://zepafasamog.weebly.com/uploads/1/3/4/3/134361306/3101675.pdfIn PDF document text
    • http://cbstav.cz/file/zovisugiduxeroxaverol.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/16240429cca5cbb9b154dba7cb743a2e/16750590877.pdfIn PDF document text
    • http://millvalley.com/wysiwygfiles/file/xalus.pdfIn PDF document text
    • https://wuvekodufunat.weebly.com/uploads/1/3/5/2/135298648/91ecbe32509.pdfIn PDF document text
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f9d423b33bf---boxibireleni.pdfIn PDF document text
    • http://azseal.net/uploads/userfiles/file/77925760719.pdfIn PDF document text
    • http://arredamentoambienti.it/img/file/mifedewunulesoriwajufuje.pdfIn PDF document text
    • https://adporly.emailingmanager.com/uploads/editor/file/66259305380.pdfIn PDF document text
    • https://falomomorojed.weebly.com/uploads/1/3/1/4/131438216/c8e0b920a2b9.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16229bdbbb6f15---wutizizodizevuvu.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/16232cb44204ca---xosadixes.pdfIn PDF document text
    • https://zaforidexig.weebly.com/uploads/1/3/7/5/137512264/dozemewowaxote-tepivere-rupotuxokamevup.pdfIn PDF document text
    • http://invenger.net/admin/ckeditor/kcfinder/upload/files/66922099571.pdfIn PDF document text
    • https://kotutoxegaru.weebly.com/uploads/1/3/2/6/132695780/4934432.pdfIn PDF document text
    • https://dajepulexito.weebly.com/uploads/1/3/4/5/134591334/reragokajerinaxolega.pdfIn PDF document text
    • https://ranumurubakek.weebly.com/uploads/1/3/5/3/135341533/a02351fd2e.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/f9c246fc94172e7e8dc3c7fbab207177/nidikewuxigeroraluta.pdfIn PDF document text
    • http://sutinlawkrabi.com/ckfinder/userfiles/files/63647594849.pdfIn PDF document text
    • https://widosogepe.weebly.com/uploads/1/3/3/9/133986955/202c587c.pdfIn PDF document text
    • https://cafij.co.za/XSRYdR1H?utm_term=jabra+gnm-ote4+pairing+modePDF 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_off0004f6b9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004f6b9.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004f6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F6B9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00050ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50ED0 10764 bytes
SHA-256: ba05e624d6cc7083ee2c3051697ad77ea5eaab0c6ddc85f3d858bd43839c870b
font_02_sfnt_off0005272f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5272F 19124 bytes
SHA-256: db25839a800d9cf146f32e8d83d819717d1e8edb18c7ba8affe51864c92ecef8