Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dcb0e24d2989671…

MALICIOUS

PDF

70.8 KB Created: 2021-09-13 00:46:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: f119c845fa8e733561098a73d20bd4a5 SHA-1: b8732413fff4a95198b8c7e73cc08321af2eb5cb SHA-256: 1dcb0e24d2989671925bc12622d8091cf5c7896710ea1afd731193a099c699fc
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9837

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://infrive.ru/uplcv?utm_term=my+hero+academia+season+2+episode+1+english In PDF document text
    • http://stsmcc.org/www/js/ckfinder/userfiles/files/5079186578.pdfIn PDF document text
    • https://dagvandearchitectuur.be/_files/file/54055443367.pdfIn PDF document text
    • http://gdlejia.com/uploadfile/files/20210909_024932.pdfIn PDF document text
    • http://rasciindia.com/firetech/ckupload/files/78310000180.pdfIn PDF document text
    • http://www.sandipmallick.com/fckimages/file/16488416966.pdfIn PDF document text
    • https://equator-maritime.com/userfiles/file/nanuwojunewowatumazo.pdfIn PDF document text
    • http://efuturesthai.com/uploads/files/bariwabatasijuwo.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/0f0a4ed4f4d6ef9575366df7bea31ac2/kuvozoxewitepomiwipom.pdfIn PDF document text
    • http://alrabbancapital.com/file/files/lozopipiv.pdfIn PDF document text
    • http://thanuyentea.com/ckfinder/userfiles/files/61191781174.pdfIn PDF document text
    • https://tommytest.dish1314.com/data/html_editor/files/20409979460.pdfIn PDF document text
    • http://tufaghanafc.com/js/ckfinder/userfiles/files/rosoruberunixalobudepuz.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/luseguwedere.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613504ce64f97---47606204052.pdfIn PDF document text
    • http://www.hgbehringer.de/img/files/files/29010614335.pdfIn PDF document text
    • https://eclearusa.com/images/file/wureputox.pdfIn PDF document text
    • https://stallion-international.com/userfiles/file/95336487653.pdfIn PDF document text
    • http://anoh.net/pds/userfiles/files/kadolekivot.pdfIn PDF document text
    • http://vertex-decor.com/userfiles/file/vitejituxapijojiro.pdfIn PDF document text
    • https://smobiil.eu/userfiles/files/52334471151.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/gigabulagirobimuwap.pdfIn PDF document text
    • https://renewone.de/files/4497191639.pdfIn PDF document text
    • http://reguitti-engineering.it/userfiles/files/petobefimigufif.pdfIn PDF document text
    • https://sailstudy.in/ckfinder/userfiles/files/63033187169.pdfIn PDF document text
    • https://rallstarawards.us/nbloom/fckuploads/file/37177415962.pdfIn PDF document text
    • http://taigesw.com/upload/files/39283201204.pdfIn PDF document text
    • https://smartcirclegroup.com/userfiles/file/16896918653.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_off0000b637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB637 14904 bytes
SHA-256: 4591b737ff6b5ecba96f4e08c06e12d48930ae4565fdf169334310e1282cd41d
font_01_sfnt_off0000dbc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC0 11144 bytes
SHA-256: 1feaa1857fae003b6160555eddb54bfe2c326f2476058da595d9115f580c36be
font_02_sfnt_off0000f576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF576 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1