Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e0a43ff5bb39884…

MALICIOUS

PDF

36.0 KB Created: 2021-05-25 06:35:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b68e837e04f680e7eb096efd20fc143d SHA-1: 2a24b2f333d53e90d45bc7345cee29f3b32acdf1 SHA-256: 9e0a43ff5bb39884a68e3c39dae9af7d7fac7a1abc4ff211ee966636ed5c5e92
82 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'free generator' or 'game hack', directing the user to a suspicious URL. This suggests an attempt to trick the user into downloading a malicious payload, likely for further exploitation. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/was-minecraft-ever-free-game-hack PDF link annotation
    • http://pisanie-nut.pl/images/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pisanie-nut.pl/images/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://pisanie-nut.pl/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pisanie-nut.pl/images/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • http://pisanie-nut.pl/images/free-spins-coin-master-2021_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_off00003482.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3482 24876 bytes
SHA-256: 75dd735e47a0d3b7d093cb67ac2ffe48a74aedfdce4145782a516b194fe76799
font_01_sfnt_off00006cd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD0 17880 bytes
SHA-256: fa9564ce5793f03604dae66ea4261aaef87f9e1e7420b634dd5196a1b51aa919

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