Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6b28fc3fb30e23f…

MALICIOUS

PDF

36.7 KB Created: 2021-05-22 20:11:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c6e35e2c9dfe1bf019f0226a35544939 SHA-1: 23dcdb063e2283a764d6819e18310cc37f936401 SHA-256: a6b28fc3fb30e23f2b43fe20e9fa9413b2be4b9b1daba15ca5b062ab55d666ea
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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-obby-game-hack PDF link annotation
    • http://ghi.dk/billeder/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32A0 26468 bytes
SHA-256: 98caa36d72e3b1164a1cee3fe17f422539daaca2771efce0883dfb247faddab4
font_01_sfnt_off00006e55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E55 18196 bytes
SHA-256: adb317c4997580e24d4ed6f1d3168dfe6823b431b7b24dbbc6245ab95f909cf9

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