Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61b77de6a785d72…

MALICIOUS

PDF

312.0 KB Created: 2022-03-28 02:20:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 5734830c7f5ea80645b6d89171ccdb34 SHA-1: bdfee950b2f5193bc01a3b8e84317b1686149fe9 SHA-256: b61b77de6a785d729342002f6610f1bbf5d2d927419411b5bbbdb109eee3ed65
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7192

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://yubit.co.za/XSRYdR1H?utm_term=free+video+converter PDF link annotation
    • http://hotelgiottotorino.com/userfiles/files/givadolisum.pdfIn PDF document text
    • http://natur-pet.cz/webpagebuilder/ckfinder/userfiles/files/kuzurakaji.pdfIn PDF document text
    • http://z-i-f.ru/userfiles/file/bemixaloxigakuxojagodoz.pdfIn PDF document text
    • http://firstcuwire.com/file_media/file_image/file/15346024065.pdfIn PDF document text
    • https://berker-rozetki.su/kcfinder/upload/files/gumulusizotepalatimonezi.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/vifiec6dn52u2heduhv8lgl8ok/29642557833.pdfIn PDF document text
    • http://8njl.com/userfiles/files/42613904343.pdfIn PDF document text
    • https://ra7a7p-h3ba7.com/contents/files/vatoju.pdfIn PDF document text
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.com/ckfinder/userfiles/files/bojolikijojaril.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/162261bfcef905---85123964008.pdfIn PDF document text
    • https://leganordavigliana.it/uploads/file/jufuletaxowabe.pdfIn PDF document text
    • https://peltonfell.org.uk/ckfinder/userfiles/files/59535347203.pdfIn PDF document text
    • http://kartelabasligi.com/images_upload/files/43203407667.pdfIn PDF document text
    • http://www.salda.lt/saldus/kcfinder/upload/files/98343487971.pdfIn PDF document text
    • http://nicenpos.com/userData/board/file/15782539464.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/29733265538.pdfIn PDF document text
    • http://evaemlak.com/userfiles/file///16267326273.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/ta4gnar37n4admikt8uc78c62l/3386150872.pdfIn PDF document text
    • https://isabellepieman.com/userfiles/file/poxepibeburim.pdfIn PDF document text
    • https://togeltop.net/contents/files/nosesofuxi.pdfIn PDF document text
    • https://a-pointpro.com/cms/ckfinder/userfiles/files/93093997161.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/f0b6f282b632b5b0ccd607824c06493a/53260447396.pdfIn PDF document text
    • https://revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622ca73539556---63946241996.pdfIn PDF document text
    • http://hankook-system.com/userData/ebizro_board/file/47847506536.pdfIn PDF document text
    • https://doradca-bankowy.pl/files/files/28581485608.pdfIn PDF document text
    • https://www.adira.co.id/assets/kcfinder/upload/files/94926109964.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_off00045868.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00045868.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00045868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45868 10032 bytes
SHA-256: 289d3df76ee9e80efddcc25b44e42f970535377c5b41fd6d8db3af25e2344de3
font_01_sfnt_off00046ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46EC3 16220 bytes
SHA-256: 207eb3b51995adbdef2a766e0364e2c2ee182a7f0f0647c12a4a3807efc046f6
font_02_sfnt_off000484a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x484A3 19468 bytes
SHA-256: 7cb2b7d796be54375df1b9851db5221d77c6163a4507440d95c4c21d40280400
font_03_sfnt_off0004b819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B819 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9