Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bcf99103c4d534e…

MALICIOUS

PDF

102.4 KB Created: 2022-04-12 08:47:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: 640136c062c46a0160ea9f9046d97467 SHA-1: 795cd904a5c68407c3aa2c4ed11a2120ff9356b1 SHA-256: 3bcf99103c4d534e4cbb64a7374ce21f4ed1216ef9907b12a61323e0e16fab4d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://colod.co.za/YmrXLWy8?keyword=how%20to%20change%20battery%20in%20garage%20door%20opener%20chamberlain PDF link annotation
    • https://wonwon.taipei/photo/file/libunapazatopatovekozumob.pdfIn PDF document text
    • http://nhasachnguyenvancu.com/Images_upload/files/povaxivovukames.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1624f4e33a0209---22573548138.pdfIn PDF document text
    • http://hhoasis.org/app/webroot/img/fck/file/80919128839.pdfIn PDF document text
    • https://xovokemuzulu.weebly.com/uploads/1/3/4/7/134703915/wabekironegix.pdfIn PDF document text
    • https://girisuwudogepo.weebly.com/uploads/1/3/0/7/130776006/8371137.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/162513a92e5ec0---25098462774.pdfIn PDF document text
    • http://hoanhaochemical.com/uploads/files/2992292307.pdfIn PDF document text
    • https://hk-delight.com/UploadFiles/file/gevatonujadakovefiv.pdfIn PDF document text
    • https://febovaze.weebly.com/uploads/1/3/4/1/134131302/pamuxevu.pdfIn PDF document text
    • https://dotcomtravelegypt.com/userfiles/files/38788520165.pdfIn PDF document text
    • https://wotapidedodibi.weebly.com/uploads/1/3/4/4/134475573/pagimajapu_fedejilitiko.pdfIn PDF document text
    • https://xebagaxasu.weebly.com/uploads/1/3/4/8/134878678/kovobexafotox.pdfIn PDF document text
    • http://www.veedik.net/assets/admin/kcfinder/upload/files/75192079457.pdfIn PDF document text
    • https://vukubafifobam.weebly.com/uploads/1/3/1/6/131636562/8377892.pdfIn PDF document text
    • https://pefupofavuxugo.weebly.com/uploads/1/4/1/2/141249676/zipanavovof.pdfIn PDF document text
    • https://matatotasewitux.weebly.com/uploads/1/3/1/3/131384286/690745.pdfIn PDF document text
    • https://monirazosakazux.weebly.com/uploads/1/3/5/3/135316997/a46b92b.pdfIn PDF document text
    • http://livestocksaltlicks.com/ckeditor/kcfinder/upload/files/18136366184.pdfIn PDF document text
    • https://nawixelufa.weebly.com/uploads/1/3/5/3/135317770/4648304ad.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_off00012cd6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00012cd6.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CD6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000144ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144ED 11124 bytes
SHA-256: 226b47110a03597f8cc28d9109e58836616a7779db2ee6e08f5f854c0ffdfa24
font_02_sfnt_off00015e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E45 17236 bytes
SHA-256: d9fa33936c32242a72310fbd64315db3f6e2fcd62b9a709a7e236ec79fc871f8

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