Malicious PDF — malware analysis report

Static analysis result for SHA-256 af270fb4d6ac5832…

MALICIOUS

PDF

344.5 KB Created: 2022-01-09 10:54:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 7b4c83deaf194f31ee99fb0aa4ebaae0 SHA-1: b1cce3ffa26cbd6be8ccebe0676bedfa132b7bf8 SHA-256: af270fb4d6ac5832307df24efb8105a24a8a4cfc82d68f19ed48fcf16ba83dfa
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7167

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://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616f61fed980e---jupojeku.pdf In PDF document text
    • http://ehoron21.mn/uploads/files/79493579354.pdfIn PDF document text
    • http://matsusushionline.com/uploads/files/47652434903.pdfIn PDF document text
    • http://wwsm-us.com/files/file/8746838950.pdfIn PDF document text
    • http://pbpharm.com/upload/files/1631695681.pdfIn PDF document text
    • https://learnrkbin.jugalbandiresearch.com/ckfinder/userfiles/files/21858708387.pdfIn PDF document text
    • https://at1apigroup3.com/contents/files/noforu.pdfIn PDF document text
    • https://profm.hu/files/file/31860694066.pdfIn PDF document text
    • http://dobrodetel-tula.ru/kcfinder/upload/files/66708766401.pdfIn PDF document text
    • http://esipro.lu/userfiles/file/wumupamijowivix.pdfIn PDF document text
    • https://equinox-e.com/upload/files/35965524234.pdfIn PDF document text
    • http://wedding-box100.com/uploads/files/202110140420486130.pdfIn PDF document text
    • https://indirimlipin.com/calisma2/files/uploads/69951488295.pdfIn PDF document text
    • http://yuh-tarng.com/userfiles/file/gowadator.pdfIn PDF document text
    • http://www.swaving-stalinrichting.nl/ckfinder/userfiles/files/gokejamabemazuvomej.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/161974a1838411---fozanerodiwibes.pdfIn PDF document text
    • http://interwork.sk/userfiles/file/gusexuxu.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b734399930d---38514600701.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/fdaf2a814d896574a772f82a1727bfc6/1039920790.pdfIn PDF document text
    • http://realcomfort.ru/content/upload/file/39499466433.pdfIn PDF document text
    • http://dienhoabacninh.vn/webroot/img/files/liboruvinetez.pdfIn PDF document text
    • http://knipia.com/userfiles/file/2733556376.pdfIn PDF document text
    • http://rszm88.com/upfolder/e/files/20211227232911.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/RhDyTiV0TgQ/uplcv?utm_term=effective+life+of+depreciating+assets+2017+pdfPDF 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_off0004f5a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F5A2 17200 bytes
SHA-256: 6af1a228455ebdc2af52db848e8183e2d6ed69e7971ff96c396b76e25d2f9dd2
font_01_sfnt_off000521b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x521B5 11188 bytes
SHA-256: fc39de89ef383aedb4a10347f550546e30da6cbd38652809f681d98962890d02
font_02_sfnt_off00053bed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53BED 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336