Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fba8c2688c3750…

MALICIOUS

PDF

236.0 KB Created: 2022-02-03 03:47:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 96d5b0093cec2b809cf01afae445aee9 SHA-1: 345994cb4395825c6e502a2192d4e3e3f33a6572 SHA-256: a4fba8c2688c3750377c2296607139eca523c12860e971b576a5301140e950b5
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6500

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://yubit.co.za/XSRYdR1H?utm_term=aloha+pos+system+manual PDF link annotation
    • http://opt-russtd.ru/data_center/upload_pictures/file/pepodolijoged.pdfIn PDF document text
    • https://jung.su/kcfinder/upload/files/49007316411.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161c8612714577---69917705319.pdfIn PDF document text
    • http://gshosnab.ru/userfiles/file/42731878041.pdfIn PDF document text
    • http://quiltingacademy.info/fckeditor/userfiles/file/dewimafu.pdfIn PDF document text
    • http://consulcongress.it/uploads/assets/file/76783130438.pdfIn PDF document text
    • http://lobanowscy.pl/userfiles/file/33333245306.pdfIn PDF document text
    • http://sprinter-lab.ru/content/File/71381031633.pdfIn PDF document text
    • https://multimetrics.com/ckfinder/userfiles/files/4678650279.pdfIn PDF document text
    • http://cobe-ing.it/userfiles/files/39633078992.pdfIn PDF document text
    • https://southwestlooms.com/admin/userfiles/files/savosafanobojug.pdfIn PDF document text
    • http://richardchong.com/userfiles/files/7437974859.pdfIn PDF document text
    • http://boston.pl/fck_pliki/file/babiredikaxagalanel.pdfIn PDF document text
    • https://akemi.ro/hirek/file/34301595851.pdfIn PDF document text
    • http://pinboulevard.com/file_space/files/tosifup.pdfIn PDF document text
    • https://mollis.rs/files/sazovomodovipo.pdfIn PDF document text
    • https://patidarpalanpur.com/web/k/main_admin/ckfinder/userfiles/files/48712939998.pdfIn PDF document text
    • http://solarissoft.com/img/userfiles/files/fawuj.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/77eafe77f4472494108dc845ad9c9007/penukepadadoviralusibipa.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/161aba2ff486f0---86951224566.pdfIn PDF document text
    • https://mirrorlink.com/public/files/files/bojomijufudimawesijiser.pdfIn PDF document text
    • http://clinicaveterinariagussago.com/userfiles/files/14443321879.pdfIn PDF document text
    • http://yourmoneyyourbank.com/uploads/File/68523685438.pdfIn PDF document text
    • http://ezibra.pl/upload//file/89344538069.pdfIn PDF document text
    • http://ilovechardonnayhills.com/userimages/nisodebuku.pdfIn PDF document text
    • http://kutyasturak.hu/images/files/pilizemo.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/pajinomafosivawuri.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/9vr1hgij2ihnd4l3k7a7bljh2h/83672695592.pdfIn PDF document text
    • http://croepi.ch/app/webroot/kcfinder/upload/files/52571255944.pdfIn PDF document text
    • https://resortweeks.pro/userfiles/file/mutobopawubiputukunero.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/aubi6bpjgrksro5b9fpd3os4hv/81765911994.pdfIn PDF document text
    • https://tanthuantelecom.com/upload/fck/file/4073532439.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/d5ga4cmmf9ash1ka7ntpu0as5b/38000300311.pdfIn PDF document text
    • https://asset-books.com/userfiles/file/metulasizapemigonosig.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16159619e9fe63---96620403569.pdfIn PDF document text
    • http://palaciodelosnavas.com/userfiles/file/5563277923.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/161bfedb310c16---23333926507.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/1578648dda3ab97277a5e1589f4a98fb/raburoxufu.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/fixisuxawavojadepozive.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_off0003420e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003420e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003420e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3420E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00035929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35929 18108 bytes
SHA-256: 83dce8768ab2a021350f46b3b3a101151be3cdb4fb98842d8fd853a17b380a7b
font_02_sfnt_off00038856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38856 10520 bytes
SHA-256: c4ad9ffdd49a25b5382e5e07ac5acc0e3a21a6fea5a94ca0935a9b8e993aa728