Malicious PDF — malware analysis report

Static analysis result for SHA-256 634cae368587fd9f…

MALICIOUS

PDF

316.4 KB Created: 2022-03-29 05:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-28
MD5: d3ea8da84e16cc82e07fd4539ea5e8f5 SHA-1: 250d5b66335444347cebc8924b5ec324841e6840 SHA-256: 634cae368587fd9f165d1c3e9b695f48a1f652a1069d925e4ed816ac608e5a5b
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7582

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=craftsman+42+riding+mower+manual PDF link annotation
    • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1622e4b2a70aff---zelinuxunonagoka.pdfIn PDF document text
    • https://akilanews.com/ckfinder/userfiles/files/32644285082.pdfIn PDF document text
    • http://hoaphathotel.com/luutru/files/39692369680.pdfIn PDF document text
    • http://markasib.ru/ckfinder/userfiles/files/69859357961.pdfIn PDF document text
    • http://zzzwchem.com/upload/files/jefibaziwomubosub.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622a518e68184---63325296033.pdfIn PDF document text
    • https://www.supergram.cz/kcfinder/upload/files/4050371519.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/162413b32db930---ziviregobetujamapopikopop.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2022-2-19/20220219105836258608.pdfIn PDF document text
    • http://kerrya.com/ckfinder/userfiles/files/3794860648.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1621c0d6a1095d---35404082992.pdfIn PDF document text
    • http://architettogherardi.eu/userfiles/files/jajuri.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/162078bd3b090b---rafijifuruzezuzezax.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/15106634710.pdfIn PDF document text
    • http://seibyou-koujien.com/files/files/59531529502.pdfIn PDF document text
    • http://countryclaim.cz/userfiles/file/16583257641.pdfIn PDF document text
    • https://www.gaiascience.com.my/assets/adminpanel/plugins/ckeditor/plugins/kcfinder/upload/files/wumuko.pdfIn PDF document text
    • https://www.nvsrolko.org/ckfinder/userfiles/files/widumijivakuj.pdfIn PDF document text
    • http://zulassungsservice4you.de/bilder/file/boxebu.pdfIn PDF document text
    • http://thietkewebsite.btccorp.vn/uploads/files/86781052177.pdfIn PDF document text
    • http://rcchoir.nl/upload/files/94846783864.pdfIn PDF document text
    • http://tehnaplus.mk/tehnaplus/kcfinder/upload/files/vetupoxuxuzulefizuzena.pdfIn PDF document text
    • http://andersen-racing.com/pictures/editor/files/nixupepubuzu.pdfIn PDF document text
    • http://dhs-bank-sample.com/app/webroot/js/kcfinder/upload/files/40890164818.pdfIn PDF document text
    • http://scouttautomotive.com/editor_uploads/system/files/87660879574.pdfIn PDF document text
    • http://www.cidadania23pr.org.br/ckeditor/kcfinder/upload/files/6808387999.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/161f92cb08cdae---44376508175.pdfIn PDF document text
    • http://y-mirai.biz/js/kcfinder/upload/files/zolafilivizexi.pdfIn PDF document text
    • http://schokoladenfontaene.de/idata/48603918034.pdfIn PDF document text
    • https://modellszerviz.hu/userfiles/file/jikurasixudizavit.pdfIn PDF document text
    • http://npi-management.com/ressource/site-image/files/77691312518.pdfIn PDF document text
    • http://uat2.hkha.com.hk/ckfinder/userfiles/files/barivaxebugijowumiturene.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_off00048440.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00048440.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00048440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48440 11112 bytes
SHA-256: 56d3b614018b1be02e97d2e8b293880abe368db3f548ac74658ec03b61c6a8c8
font_01_sfnt_off00049e21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49E21 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004b53c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B53C 17356 bytes
SHA-256: 5d0238504d349bbcd89a7cdf9530f4bc123204b7c453a5c2895f12f006c0abf4