Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2823302ac7a318…

MALICIOUS

PDF

31.2 KB Created: 2021-05-21 11:10:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5ccd26d29bc2ac16f251c5d6e3dd4263 SHA-1: aeb090d24c1d54063baf6d0b1ad21853fc0f81f2 SHA-256: fe2823302ac7a318601dad2c60cc33d1c790f2324f8be32405fc34968170aed7
74 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9785

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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://netcdn.xyz/app/431946152/free-robux-generator-no-human-verification-2021-game-hack PDF link annotation
    • http://www.hlad.hr/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33A8 26648 bytes
SHA-256: a57a6efa767ea7a3fd017e6e26c2195c3e2e0c99e934e5f56650674f2eedb254

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