Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bf173644c2f70e…

MALICIOUS

PDF

78.0 KB Created: 2021-09-17 13:18:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 097afc4468bdb0c3f6940414a72f7e24 SHA-1: d055da18587a9adbfaf68b7aeaab02c2921e2064 SHA-256: 72bf173644c2f70eae4706513170eadde308c5990679899edd9c8b4e39287f53
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://wastran.ru/uplcv?utm_term=hogwarts+mystery+cracked+apk PDF link annotation
    • http://studiolauramoschini.it/userfiles/files/45204391441.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161425184850ef---14631617457.pdfIn PDF document text
    • http://lechioutdoor.com/userfiles/file/11849481722.pdfIn PDF document text
    • http://melabo.com/upload/files/33914427440.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136919f4ea7c---2334149722.pdfIn PDF document text
    • https://dla-pracownika.pl/pliki_user/File/zudutukisaroneta.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/giiv2l782puh5fas4uec4csuq0/bupozi.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16140b9fead6be---pibazudibusidezuperade.pdfIn PDF document text
    • http://ambvet-trefontane.eu/userfiles/files/80023352299.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/8d409cac41a85f4410efcdd331b42627/retelaxa.pdfIn PDF document text
    • http://starwindows.ie/ckfinder/userfiles/files/36694373178.pdfIn PDF document text
    • https://interference.ajoda.eu/userfiles/files/buwiz.pdfIn PDF document text
    • http://fli.edu.mn/ckfinder/userfiles/files/60450252598.pdfIn PDF document text
    • http://ambvet-trefontane.eu/userfiles/files/xanexetejowodenegafomig.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/161408fd499160---xofawodozaf.pdfIn PDF document text
    • http://www.leasebridge.com/CKUPimg/files/20446311431.pdfIn PDF document text
    • http://ctcinsulator.com/uploads/file/zakabakagilubix.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/zutoxoxi.pdfIn PDF document text
    • http://red-persimmons.com/upfiles/editor/files/51561746656.pdfIn PDF document text
    • https://goez3.com/10005001208290177/ckfinder/userfiles/files/2566154517.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/78761487958.pdfIn PDF document text
    • http://dichvubaove.online/upload/files/zakukedugovofefe.pdfIn PDF document text
    • http://denis-lefebvre-services.com/fichiers/file/2172305775.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_off0000c648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC648 10896 bytes
SHA-256: c0be70dd9ac9b82b82e3ef364f2396cb606115c09e9e3242aff35bbac66b7237
font_01_sfnt_off0000df6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6E 19224 bytes
SHA-256: 67b589c2d52367217661ac51a92f8247d734d632a3498a1908992a71d990009b
font_02_sfnt_off000111d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1