Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5db4dadfd424473…

MALICIOUS

PDF

78.3 KB Created: 2021-12-12 12:03:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 299c6b45124ccbec4a04b4e6f5a76431 SHA-1: 40ca9b849e4bbf3fabdb542657c837f1a19906c4 SHA-256: c5db4dadfd42447386b84b0dbb0966e1fe1e0b3f8748502469a739a65986bf5d
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://drafthe.ru/uplcv?utm_term=mircea+eliade+maitreyi+english+pdf PDF link annotation
    • http://tsg-edinstvo.ru/userfiles/file/toxixedifewidifuxo.pdfIn PDF document text
    • http://xmzhj.com/UserFiles/file/53975335822.pdfIn PDF document text
    • http://arniuniversity.in/ci/userfiles/files/60544823899.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/161731de21955a---27098017302.pdfIn PDF document text
    • http://ghinelliarchitettura.it/userfiles/files/76272114864.pdfIn PDF document text
    • http://sakesushilakehavasu.com/uploads/files/lijidumizaliro.pdfIn PDF document text
    • https://performanshost.com/calisma2/files/uploads/lobes.pdfIn PDF document text
    • http://studiomarcheluzzo.it/userfiles/files/27820614821.pdfIn PDF document text
    • http://dintainoodle.com/uploads/files/xakofagavixevugajibigik.pdfIn PDF document text
    • http://myxroad.com/upload/userfiles/file///55485254852.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/rikigejixojupozijasidum.pdfIn PDF document text
    • https://chatsystem.site/js/ckfinder/userfiles/files/18363194363.pdfIn PDF document text
    • https://akvaguru.hu/user/file/65332147339.pdfIn PDF document text
    • https://vgcanada.com/userfiles/file/17802135.pdfIn PDF document text
    • http://aotwcasino.com/ckfinder/userfiles/files/lobogowuvewibozutefuwuben.pdfIn PDF document text
    • https://deycaterers.com/ckfinder/userfiles/files/jitifiropejinu.pdfIn PDF document text
    • https://delta-relay.be/userfiles/file/1672388176.pdfIn PDF document text
    • http://xn----8sbemnkjd7bfu.xn--p1ai/design/img/upload/file/vewibiwimisubiwa.pdfIn PDF document text
    • http://miskolciharsona.hu/pictures/file/20696285751.pdfIn PDF document text
    • https://dynasty888.com/image/files/20210929_010917.pdfIn PDF document text
    • https://trompis-tondschungel.de/userfiles/file/nomuvizodizululutomune.pdfIn PDF document text
    • https://justchillmacha.com/userfiles/file/zosupugafipikenane.pdfIn PDF document text
    • https://jungleflightchiangmai.com/Uploads/files/12479889583.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_off0000ca75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA75 18676 bytes
SHA-256: fddbd5703f3e82cccdd49ac9b20a83a79ffab43fa8e3389ddfec20d3471686d3
font_01_sfnt_off0000fb2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2F 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off000111d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D3 11052 bytes
SHA-256: a824a4a74e389ace1b4b0c8aee466ec3210ddff5395fd1c1fec6bff27a263d3a

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