Malicious PDF — malware analysis report

Static analysis result for SHA-256 941386d40fb6cd4a…

MALICIOUS

PDF

72.2 KB Created: 2021-09-10 06:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 61f35203109c443146c3d393e1148b71 SHA-1: 5110853c9c617f3a2ed7c4716fc4843a8f7cd4a4 SHA-256: 941386d40fb6cd4aa41ca4723f169b9a681107547414a6c4c3e8c0fb885ef3dd
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file containing an embedded JavaScript stream, which is a common technique for executing malicious code. The presence of numerous external URIs, many pointing to potentially compromised or disposable domains, indicates an attempt to redirect users to malicious content or phishing sites. The ML classifier and ClamAV detection strongly support a malicious classification, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://augustaelectricalwork.com/editorData/file/86869923206.pdf In PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16139988bb7a78---zizozebal.pdfIn PDF document text
    • http://godsownproperties.com/userfiles/file/kezelosuzodet.pdfIn PDF document text
    • https://cakenflowersonline.com/userfiles/file/somuzerixaroxagazikedo.pdfIn PDF document text
    • http://quimis.net/js/ckfinder/userfiles/files/duguwatif.pdfIn PDF document text
    • http://stellar-toys.com/ckfinder/userfiles/files/97185841722.pdfIn PDF document text
    • http://claudiamelchior.it/images/file/31161121805.pdfIn PDF document text
    • http://mydreamtuscanwedding.com/editor_up/duvexebipuzubanirunapo.pdfIn PDF document text
    • https://ginniglobal.com/uploads/file/7460964496.pdfIn PDF document text
    • http://pandoraecza.com/genelresimler/file/xijojedebijurulumej.pdfIn PDF document text
    • http://minerva-collection.net/files/files/nifasoruxigamoweveru.pdfIn PDF document text
    • http://terredellamagnagrecia.com/userfiles/files/mobibixenotizobexufepusem.pdfIn PDF document text
    • http://www.vlaamspatientenplatform.be/_plugin/ckfinder/userfiles/files/74309083834.pdfIn PDF document text
    • https://pasarangroup2.com/contents/files/92296073626.pdfIn PDF document text
    • http://kripasec.com/userfiles/file/90630076843.pdfIn PDF document text
    • https://ardiinerkh.mn/uploads/userfiles/files/suneram.pdfIn PDF document text
    • http://regalmotors-jp.com/js/upload/files/busotikevevaraxaxi.pdfIn PDF document text
    • http://steakpluspizza.us/userfiles/file/xavimuj.pdfIn PDF document text
    • http://yogaschoolofkerala.com/photos/editor/files/85411041784.pdfIn PDF document text
    • http://nedvizhimost-v-sharm-el-sheikhe.ru/uploads/files/62544090028.pdfIn PDF document text
    • http://alles-vom-schreiner.de/userfiles/file/87427336578.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/38447409860.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=android+to+ios+appPDF 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_off0000b927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB927 10188 bytes
SHA-256: 735c4a3e9a6be969d772b06f681f517e5126d0a6198991cfbcdb5a8591cd99e6
font_01_sfnt_off0000d00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD00F 16928 bytes
SHA-256: 5a245b8e5c6cc2532257141d098f56973c14e78f0dfa5e70c293d0e3d1d9ce96
font_02_sfnt_off0000fbda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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