Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7ee478b87690e74…

MALICIOUS

PDF

40.8 KB Created: 2021-05-10 13:13:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f6ac3383e9a8035e3a5db392075152c1 SHA-1: 5426e4cc7805b72af1519505f9b5cbf0c39cb97f SHA-256: b7ee478b87690e7459e95eb3ac51ca2f89c2775302db3fe496a97ce241126c60
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 0.8959

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/406889139/coin-master-hack-pro-gamers-com-game-hack PDF link annotation
    • http://kita-sunshine.de/images/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://kita-sunshine.de/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000373a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x373A 26956 bytes
SHA-256: 425b82ed7df49a11fc5b853a8ecc170bc5d004c3f0c70a2057c202bef3de0e16
font_01_sfnt_off0000747e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x747E 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E30 18132 bytes
SHA-256: 7c3ba000fcc9e82367a9cf09e7428e48624a936725f215f3086fe1b405a0b7f2

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