Malicious PDF — malware analysis report

Static analysis result for SHA-256 425c83bb09a6c750…

MALICIOUS

PDF

327.8 KB Created: 2021-12-17 21:04:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 9f639e975e2f01e9bc28391e31e65cf6 SHA-1: e2fa41f7ea1bb1c6cc3487521ad007786eb4ea4e SHA-256: 425c83bb09a6c750559042a15785081c375fe9427404174bf1d495d0827d1256
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7724

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 http://cpghollywood.com/userfiles/files/33810880389.pdf In PDF document text
    • https://telewebmarketing.com/FCKeditor/file/55194542976.pdfIn PDF document text
    • https://fzclicks.com/demo/files/editor/file/51970777277.pdfIn PDF document text
    • https://mariapolis.es/ckfinder/userfiles/files/17281397098.pdfIn PDF document text
    • https://brianhigbielaw.com/UserFiles/file/57360757558.pdfIn PDF document text
    • https://sme.bankai.lv/ckfinder/userfiles/files/73330468314.pdfIn PDF document text
    • http://marketingnews.fr/images/file/51399392527.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/3k0ncsl2d9nuu0qblnf0i9f81e/daferurepetaseboba.pdfIn PDF document text
    • http://applyforloansnow.ca/site-uploads/88589490415.pdfIn PDF document text
    • http://quick-thailand.com/images/uploads/file/95087958242.pdfIn PDF document text
    • http://budka39.ru/files/82873271556.pdfIn PDF document text
    • http://thuonghieutoancau.vn/uploads/files/zuvinusaz.pdfIn PDF document text
    • http://ipublicity.cz/data/file/93822852749.pdfIn PDF document text
    • http://mebel-moscow.com/content/xuploadimages/file/87414367924.pdfIn PDF document text
    • http://haustechnik-hagenauer.at/rifejatubalug.pdfIn PDF document text
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/161ab628dcf805---5727945355.pdfIn PDF document text
    • http://asupuro.com/user_data/image/file/pupevobekobafefabogawu.pdfIn PDF document text
    • http://sb555.com/photo/file/fifufuxupokoperisalilowe.pdfIn PDF document text
    • https://samoinstitute.samoinstitute.mn/uploads/assets/file/1784346614.pdfIn PDF document text
    • https://olterus.com/contents/files/punavefiwotogapaj.pdfIn PDF document text
    • http://wp-supply.com/upimg/files/jabad.pdfIn PDF document text
    • https://zoldlepes.hu/userfiles/file/21626666524.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/161627ac410810---54646050180.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/e0dad163a621f49f386b05ad9d400920/sobirurader.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/896FEnmJZlk/uplcv?utm_term=mary+poppins+jr+songs+supercalifragilisticexpialidociousPDF link annotation
    • 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_off0004a9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A9F1 11232 bytes
SHA-256: 9a812d14690713817fe1ddb1cbfbea92cfddc9b81a4425fd8cb45b28fc267aba
font_01_sfnt_off0004c436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C436 20552 bytes
SHA-256: a459ef77c2de53bbf975c1932223f8b9f95d99ed81f32b82bdf7cb2aefc51b1d
font_02_sfnt_off0004f95c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F95C 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336