Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e29e277fa29fcdc…

MALICIOUS

PDF

80.2 KB Created: 2021-09-13 04:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 764279a77f4d4132fe053f66c3bfd844 SHA-1: 185cbeca952e04da9df004b931f249ec0fb8d648 SHA-256: 0e29e277fa29fcdc616e44dc656aee3a37af4b5963e8db81ad705035d8fe7765
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing further malware. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic specifically flags this behavior, indicating a high likelihood of malicious intent. The ML classifier and ClamAV detection further support this assessment, suggesting the PDF itself may exploit vulnerabilities or contain malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://cutyoursupport.com/userfiles/file/muzis.pdf In PDF document text
    • http://thesciencenetwork.org/uploads/files/mutusa.pdfIn PDF document text
    • https://bunian-co.com/other_files/File/60542582147.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139f93fd0f89---79884716001.pdfIn PDF document text
    • http://uleshuzatshop.hu/files/file/xadimadoxi.pdfIn PDF document text
    • http://dietaltop.com/userfiles/files/64649499176.pdfIn PDF document text
    • http://teakdeck.pl/files/file/48297287145.pdfIn PDF document text
    • http://seamacros.com/upload/file/vebibujenazafumonaduradu.pdfIn PDF document text
    • https://bdblue.com/ckfinder/userfiles/files/82615164697.pdfIn PDF document text
    • http://orikon.net/Images_upload/files/20502338012.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/161323dce5a70e---varezozago.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210909_24853427786F793A.pdfIn PDF document text
    • http://mdtrend.hu/files/file/13838001782.pdfIn PDF document text
    • http://cbstav.cz/file/24536116190.pdfIn PDF document text
    • http://hwayoung.kr/upfile/files/67182682263.pdfIn PDF document text
    • http://mptech.vn/ckfinder/userfiles/files/24831893127.pdfIn PDF document text
    • http://rheinmotel.com/userfiles/file/fejutiwekasemonuto.pdfIn PDF document text
    • http://loca-granderoue-montaletang.com/ckfinder/userfiles/files/resulixu.pdfIn PDF document text
    • https://pratham.one/file/pufunikulal.pdfIn PDF document text
    • https://lexcyberia.com/userfiles/files/jirulajafedupubu.pdfIn PDF document text
    • https://strategie-forex.com/ckfinder/userfiles/files/midesijo.pdfIn PDF document text
    • http://studionegro.net/userfiles/files/43253695043.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=how+to+retrieve+data+after+factory+reset+androidPDF 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_off0000d623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD623 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ee3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3A 10680 bytes
SHA-256: eb5c1004aec011fc3008b831ae9d7fe0dccf466f40a12a68a07aa9cfa71feb9d
font_02_sfnt_off000106e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E4 17104 bytes
SHA-256: 3fd9f015cc9d8dd83ff029904cf5d89bb12f76fc4a66f7f63aa623a2fb21f6e5

Open this report in the interactive analyzer, or submit your own file for analysis.