Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbef76abf64d81e3…

MALICIOUS

PDF

332.0 KB Created: 2022-03-08 20:51:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-24
MD5: 7d1d8154e5ae2b605ffff80dc7869615 SHA-1: 2ed8fd04df35d443f6d7031ac055ce966ba5e9c6 SHA-256: cbef76abf64d81e36de602744d511301b2566cac982f5f92edec621640446488
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6763

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://funstoreus.dialog.org/userfiles/file/52975317034.pdf In PDF document text
    • http://northlandhome.homeinspectorpro.mobi/sites/homeinspectorpro.mobi/files/file/fofasokaju.pdfIn PDF document text
    • http://bf4.nim.ru/userfiles/files/49689711153.pdfIn PDF document text
    • http://xn--80affcyoc0ac1f6a.xn--p1ai/admin/modules/ckeditor/ckfinder/userfiles/files/87811711119.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/61319740277.pdfIn PDF document text
    • https://tw-itemaos.com/ckfinder/userfiles/files/55290415007.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621141e0de7a8---sulorugukidevisikixozig.pdfIn PDF document text
    • https://sentralperdana.com/file/vutomanapumujasa.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/162198b68bd5ac---76716273475.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/162267e0651974---zebepitebepozivirujusaz.pdfIn PDF document text
    • https://cuisinescartier.ca/upload/editor/file/kisuvedo.pdfIn PDF document text
    • https://rozetki.su/kcfinder/upload/files/69679865921.pdfIn PDF document text
    • https://combrooncom.com/contents/files/87661531924.pdfIn PDF document text
    • http://fulepmark.hu/nyebu/fulepmark/userfiles/file/xogitewinizomuroxaba.pdfIn PDF document text
    • http://4sale.hu/upload/file/bekaganajutexerusofupog.pdfIn PDF document text
    • http://firegallery.ru/img/upload/70859116849.pdfIn PDF document text
    • http://bbbo.handyfriendship.com/upload/files/79325497960.pdfIn PDF document text
    • https://albertsdrukwerk.nl/bestanden/files/83098446954.pdfIn PDF document text
    • https://ct-tci.com/cttax/userfiles/files/32716253677.pdfIn PDF document text
    • http://wo-kop.pl/userfiles/file/wikabamenenuzew.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16206238c3fb3f---49457371381.pdfIn PDF document text
    • http://krzeptowski.pl/file/94100745413.pdfIn PDF document text
    • http://chugguwang.com/files/fckeditor/file/nojemufugoxod.pdfIn PDF document text
    • http://buyo-g.net/userfiles/file/batate.pdfIn PDF document text
    • http://cetis156.neutronds.com/assets/js/ckfinder/userfiles/files/89694406958.pdfIn PDF document text
    • http://www.instalacionescueto.com/nueva/ckfinder/userfiles/files/vomafukifotulakafo.pdfIn PDF document text
    • http://heonlab.hu/uploads/files/54761539488.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=weather+report+for+taos+new+mexicoPDF link annotation
    • http://futboltotal.net/images/files/bitogefewopinofifef.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_off0004bfd0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004bfd0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004bfd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BFD0 10880 bytes
SHA-256: 8eb76aa883d86f2e6d73cf12074adfc4ed977d18a93a3d530993d0fbcc0847b2
font_01_sfnt_off0004d8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D8DE 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004eff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EFF9 18432 bytes
SHA-256: 06dc32109934a1fdb2b99949eb225ddf167818ed2675c3a3ead19b2c4336ef34