Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc1e4d143b8f5e4…

MALICIOUS

PDF

82.9 KB Created: 2021-10-05 03:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: 841b7fe0382a1dabcdfee522995cd966 SHA-1: ebc3d6bf163a983221e7ff34ca9d08e58419eea8 SHA-256: 1dc1e4d143b8f5e4922a712f6f8af5f40e3446b04fbed67c9a6609a80b1b9db2
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 7

  • 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.
  • 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://bulendengin.com/upload/ckfinder/files/88973678480.pdf In PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff8a9c4b89---xasoze.pdfIn PDF document text
    • http://www.poliklinika-hb.cz/userfiles/file/51544531961.pdfIn PDF document text
    • http://canadianrockies.ca/files/file/desodiroseve.pdfIn PDF document text
    • https://zahidnawaz.com/UploadedImages/image/mavorakugomikefuziboze.pdfIn PDF document text
    • http://studiomanzella.com/userfiles/files/24797944351.pdfIn PDF document text
    • https://tomclarkvoiceovers.com/userfiles/files/78534004099.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1612e9d60dc09f---vifize.pdfIn PDF document text
    • https://doxity.ro/ckfinder/userfiles/files/kaxisukunolofezam.pdfIn PDF document text
    • https://elitstroycraft.ru/source/file/lexip.pdfIn PDF document text
    • https://altinhediyeler.com/calisma2/files/uploads/52245894637.pdfIn PDF document text
    • https://soudureornementalelauziere.com/upload/editor/file/xanuvubudigifazazipatiwu.pdfIn PDF document text
    • http://spartapr.com/images/upload/file/xalonixetiwegafitalovuki.pdfIn PDF document text
    • https://underworldgear.com/upload/users/files/27098791317.pdfIn PDF document text
    • https://defi128.phpascal.com/userfiles/files/40088588324.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16150170d46c07---xobarozafelirurijuradigep.pdfIn PDF document text
    • http://snft.ro/media/file/84463516223.pdfIn PDF document text
    • http://cathyourhair.nl/js/ckfinder/userfiles/files/34514940299.pdfIn PDF document text
    • http://ventss.ru/userfiles/files/96574446875.pdfIn PDF document text
    • https://www.pension-chevaux-haras-gabereau.fr/ckfinder/userfiles/files/76555984554.pdfIn PDF document text
    • http://taketty.xyz/js/ckfinder/userfiles/files/2944723292.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=how+to+defrost+chicken+thighsPDF link annotation
    • 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_off0000de85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE85 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF697 18316 bytes
SHA-256: c5b153316f9f3553ae76e08fcba9dd8894c209085eb18e8899116108127283f5
font_02_sfnt_off00012595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12595 10716 bytes
SHA-256: dc79c1ad3ae04ae5622a6e6305ad520ca8d42a590bbf264d1996a63b7c9efd9f