Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99f4b72d8e784c3…

MALICIOUS

PDF

494.9 KB Created: 2022-02-16 14:25:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 566a6dc14ffed14f96dd5642add12da4 SHA-1: 2f4b520e5db48c0033e83b210a14e995bbe9496b SHA-256: f99f4b72d8e784c30919d67717da8b98e24671fa320408a95edcbeb1f3e41198
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6515

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://lovig.co.za/XSRYdR1H?utm_term=chandrayaan+2+information+pdf PDF link annotation
    • http://eschool365.in/js/admin/uploadfiles/file/67170995900.pdfIn PDF document text
    • http://i-harmonics.com/upload/files/luxuzugedulifoluvu.pdfIn PDF document text
    • http://tsradviseurs.nl/mailing/images/photo/file/pomisalewadefokux.pdfIn PDF document text
    • http://hanmih.com/userfiles/file/20211104114852.pdfIn PDF document text
    • https://anhhuynoithat.com/asset/files/22594335443.pdfIn PDF document text
    • http://allergyc.news-read.com/upload/files/63306668550.pdfIn PDF document text
    • http://xn--9d0bk1sn6gncq95flql.com/user_data/kcfinder/files/nagufotejixigalejo.pdfIn PDF document text
    • http://envisystem.com/upload/userfile/files/25802469476.pdfIn PDF document text
    • https://isitekmuhendislik.com/userfiles/file/75446269090.pdfIn PDF document text
    • http://yuhongzg.com/d/files/50974046907.pdfIn PDF document text
    • http://michalpavlicek.com/uploaded/file/61739031605.pdfIn PDF document text
    • https://arerp.kr/data/file///80049288102.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/2de0d4740c97ede8f68516e4908c0d9e/ketekopirixijimadux.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/f3k1cik7o21vejuo0skdejddnc/50616273438.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00074ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74EA0 10684 bytes
SHA-256: 4520425fe3d36317d98bafad5673834d85d60f3d837bdc65ae6d03b6fd01bde1
font_01_sfnt_off000766f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x766F2 18304 bytes
SHA-256: 2290bfa97777020dfd3872f2a0c663f9b6b2b15ce257f2923a74f9bbe33a7a83
font_02_sfnt_off00079640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79640 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9