Malicious PDF — malware analysis report

Static analysis result for SHA-256 de40abb4dbec6e1d…

MALICIOUS

PDF

370.7 KB Created: 2022-03-29 10:03:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-03
MD5: fea5586a3c42e532df7a7fe039190808 SHA-1: c41cd0f7a281354524179491218b533635949ede SHA-256: de40abb4dbec6e1d9d5be513925068bf3742cc3df0e0f3f9fc9344a1e74c236c
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7298

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://cafij.co.za/XSRYdR1H?utm_term=zombie+shooter+2 PDF link annotation
    • http://accessprecision.com/userfiles/file/milajokamixegabilug.pdfIn PDF document text
    • https://chetanaus.org/bheru/uploadfiles/file/mubozut.pdfIn PDF document text
    • http://chieucoingason.vn/files/vagutuvu.pdfIn PDF document text
    • http://tiga.co.th/ckfinder/userfiles/files/rodoxafogotewuwabobex.pdfIn PDF document text
    • http://janeblondsalon.cz/files/upload/files/83376501426.pdfIn PDF document text
    • http://qunjl.com/userfiles/files/9132558569.pdfIn PDF document text
    • https://zagladaold.holocaustresearch.pl/nowy/photo/file/77392281232.pdfIn PDF document text
    • http://fcms.nl/KCFinder/upload/files/63723519200.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/985b2b238a70e2816f3097ecf439fea1/39905569625.pdfIn PDF document text
    • http://hmarksltd.com/assets/ckeditor/kcfinder/upload/files/gutudolig.pdfIn PDF document text
    • https://seeandhearbetter.ie/img/shop/contents/texoxenuziju.pdfIn PDF document text
    • https://www.scmribadeave.pt/sgc/Assets/Plugins/CKEditor/kcfinder/Uploads/files/46125972717.pdfIn PDF document text
    • http://privatmajo.sk/upload/files/jajatukexobesu.pdfIn PDF document text
    • https://firsatoyun.com/calisma2/files/uploads/53009172138.pdfIn PDF document text
    • http://www.mardancci.com/assets/ckeditor/kcfinder/upload/files/vipidazewadodumawan.pdfIn PDF document text
    • http://madiran-cruduparadis.fr/ckfinder/userfiles/files/10604952947.pdfIn PDF document text
    • https://888nv.ru/userfiles/file/80079785017.pdfIn PDF document text
    • http://eqsport.nl/userfiles/file/sariz.pdfIn PDF document text
    • http://drairtools.com/ckfinder/userfiles/files/10108247747.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/162106901a39a7---vuditegexajodesapabezi.pdfIn PDF document text
    • http://bojovesporty.cz/userfiles/file/12898846751.pdfIn PDF document text
    • https://powiedzdoktorze.pl/file/files/panuwunutevodikuvip.pdfIn PDF document text
    • https://pujabhandar.com/kcfinder/upload/files/14870438819.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/201824024878.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/e24c8cfae6b7f77e710e93019f8abc86/94957045110.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1620dab65287a6---54458375157.pdfIn PDF document text
    • http://mvdeastudio.it/userfiles/files/24557866065.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_off000558b6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000558b6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000558b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x558B6 20504 bytes
SHA-256: 13f404cc39e287a4464bd99bc64885e3c145927a72ee0fc460a81a65f04f5fab
font_01_sfnt_off00058e19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E19 10284 bytes
SHA-256: 38372ad1faa62d896bed1b401fb0908ffe3ebc138340394c0f120d79a6ed836d
font_02_sfnt_off0005a553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A553 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9