Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd0c949cf02b44bb…

MALICIOUS

PDF

71.8 KB Created: 2021-09-13 04:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: cf4dc99ddb2731c0d1a8acb782dbaec2 SHA-1: 28dda96d1c7bee9a57151a84a015f29544e1a679 SHA-256: dd0c949cf02b44bb312648a248f9f22f579829964ec8684f8aff0f9cd0e53e37
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one heuristic identifying it as a link farm on disposable hosting. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to potentially malicious external sites, aligning with phishing or malware delivery tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://ackerviewguesthouse.com/userfiles/file/jesadu.pdf In PDF document text
    • http://mastera-mix.ru/ckfinder/userfiles/files/11613992683.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/747jensrmg69js6a5m4ovca5jd/dekitezujaguk.pdfIn PDF document text
    • http://cartopack.be/Images/file/9503892298.pdfIn PDF document text
    • http://sotel-perm.ru/site/file/72802307650.pdfIn PDF document text
    • https://franciscojaviermoreno.com/DocsCKeditor/files/gemorabewatisabifizi.pdfIn PDF document text
    • https://sweetburden.com/upload/users/files/92302190703.pdfIn PDF document text
    • http://penzionnakrizankach.cz/ckfinder/userfiles/files/53821258579.pdfIn PDF document text
    • http://studioprogettoarchitettura.eu/userfiles/files/mozuperoxoxozoge.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/cqkmj2uqp4ima28e32pmh21p7i/58245594915.pdfIn PDF document text
    • http://architettobotteonpierpaolostudioabacus.it/userfiles/files/87593332039.pdfIn PDF document text
    • http://vngo-cc.vn/cooker/public/files/palonapivazarezu.pdfIn PDF document text
    • http://peoplefoster.com/pliki/50599116525.pdfIn PDF document text
    • http://cameranichietsu.com/luutru/files/49448346188.pdfIn PDF document text
    • http://phaptangpgvn.net/app/webroot/upload/files/tikixigolopir.pdfIn PDF document text
    • http://4chan.ro/UserFiles/file/mimunevowuz.pdfIn PDF document text
    • https://cosplay-expo.it/ckfinder/userfiles/files/73734702336.pdfIn PDF document text
    • https://kubermatkaplay.com/ckfinder/userfiles/files/87063438253.pdfIn PDF document text
    • http://kzlo.pl/fotki/fotki/file/nizadujikur.pdfIn PDF document text
    • http://sonarkella.com/userfiles/file/gekunaxuraf.pdfIn PDF document text
    • http://infinity-c-t.com/userfiles/file/43513966333.pdfIn PDF document text
    • https://unitytradecapital.com/ckfinder/userfiles/files/wirowogujido.pdfIn PDF document text
    • http://fatfailogistics.com/fckeditor/files/file/6361571861.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=vpn+turbo+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_off0000b9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9E5 15976 bytes
SHA-256: b9c5c43046ce6b620bd8e90e8b950e98ee26a8764e3716dfaa2ddd4b586992b9
font_01_sfnt_off0000e2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C4 10248 bytes
SHA-256: 810038346cd58cf7aa7f083f5fc1aef249f7bfe081bd04ff2100e57746faf20b
font_02_sfnt_off0000f99a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF99A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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