Malicious PDF — malware analysis report

Static analysis result for SHA-256 258633a94b855a35…

MALICIOUS

PDF

456.3 KB Created: 2022-03-04 18:57:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: a4cf2c59a226dd2312698c51c0b5b8b0 SHA-1: 93cc88ea98fc42b3a5cef1913386c75cbd290f6d SHA-256: 258633a94b855a35c401e14d46cb02caef23b81aef73dbf91c87f656e407eb28
222 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6325

Heuristics 9

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://tevav.co.za/XSRYdR1H?utm_term=accounts+payable+clerk+resume+template PDF link annotation
    • https://quangcaowebsite.vn/uploads/files/41202216498.pdfIn PDF document text
    • https://demetraproject.eu/ckfinder/userfiles/files/24245036273.pdfIn PDF document text
    • http://health-bridge.in/upload/file/ruwig.pdfIn PDF document text
    • https://www.ijestr.com/ckfinder/userfiles/files/zukamigitoxu.pdfIn PDF document text
    • http://edukoc.net/userData/ebizro_board/file/kezijixuwiw.pdfIn PDF document text
    • http://batteryzone.pk/assets/kcfinder/upload/files/lebirisaradoxigeba.pdfIn PDF document text
    • http://slsnn.ru/content/files/28097711231.pdfIn PDF document text
    • https://ourlady-schools2.com/userfiles/files/57767998959.pdfIn PDF document text
    • https://bukkosdiskola.hu/files/file/gimejuwuvunafal.pdfIn PDF document text
    • http://www.radeton-cz.vasestranky.cz/ckfinder/userfiles/files/tatotezisunujodipodemo.pdfIn PDF document text
    • http://iuoooo.com/filespath/files/20220215201350.pdfIn PDF document text
    • http://ekouklid.eu/UserFiles/file/kazepitimawifivoxa.pdfIn PDF document text
    • http://abb-impuls.su/kcfinder/upload/files/midakuviloku.pdfIn PDF document text
    • https://achizitiiverzi.comrex.ro/images/media/file/tiximokesujinusitofuvix.pdfIn PDF document text
    • http://pactolous.hu/upload/file/51511271711.pdfIn PDF document text
    • http://ei-windykacja.pl/upload/file/24649145652.pdfIn PDF document text
    • http://winagain.co.za/kcfinder/upload/files/mufexutonusow.pdfIn PDF document text
    • http://jdjcnc.com/upfolder/e/files/20220218111451.pdfIn PDF document text
    • http://thehealingjournal.com/userfiles/file/lapititiligubaku.pdfIn PDF document text
    • https://sts-cct.com/app/webroot/userfiles/files/fixexedewipugezer.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_off0006aae2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006aae2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006aae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAE2 10872 bytes
SHA-256: 0e117e450114929e9390516ecf0ff1dc13195d09d0c15eed282b59f655adb638
font_01_sfnt_off0006c3ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3EF 20752 bytes
SHA-256: 2e94be26b7400155fb37761f7ed7a161a0d3b7e9625c4add3eacbc095a42351e
font_02_sfnt_off0006fafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAFC 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9