Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2dc251bbcc1138b…

MALICIOUS

PDF

66.8 KB Created: 2021-04-11 12:27:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7eb94a0b252104eaaa27b3c8eb350ea SHA-1: 369cb2240a2450c71ea144dae1a5c0f6e1cd2da4 SHA-256: c2dc251bbcc1138b4a9b20822ca26f39ffcb6e5276cf7e7a63bc4bad5615012e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous embedded URLs disguised as search results, specifically for 'rajasthani song mp3 download', which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8307

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://www.jwico.com/sites/default/files/webform/49109440539.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/51762260361.pdf
    • https://www.dgs-interparts.be/sites/default/files/bipaxuvimul.pdf
    • http://cicatsalud.com/html/sites/default/files/webform/15691680518.pdf
    • http://klm3fg.grhosting.cz/sites/default/files/webform/files/nuzutigurazuleziwuta.pdf
    • http://oaklandchildcare.org/sites/default/files/webform/34869944823.pdf
    • https://extranet.blanchisserie-toulousaine-de-sante.com/sites/extranet.blanchisserie-toulousaine-de-sante.com/files/documents/justificatifs/ratasivovo.pdf
    • http://portal-mysigma.com/system/files/student-proof/72808970040.pdf
    • https://aboss.by/sites/default/files/webform/12132802610.pdf
    • https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/zizepuniket.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=aa+ra+ra+ra+rajasthani+song+mp3+download
    • https://www.vub.be/sites/vub/files/webform/ludazerubadariwevulefaxu.pdf
    • https://www.healthdata.org/sites/default/files/resumes/jojilekavoxojomoz.pdf
    • https://ec.europa.eu/eip/agriculture/sites/default/files/webform/9071701793.pdf
    • https://www.ice.cam.ac.uk/sites/www.ice.cam.ac.uk/files/webform/46273532178.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5ad.bin
786c9d3898ffcf28842766a65d70ac1f3052647446daa9cd515c442aef3a8ffb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AD 5696 bytes

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