Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc8e47ab184e5bad…

MALICIOUS

PDF

42.0 KB Created: 2021-05-20 00:00:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c9b308c01f0f7dbf79f1b791612d045d SHA-1: a983f73c4cde460bc9c843a39bc702d745d04f0c SHA-256: fc8e47ab184e5badad73eb468e51cc692ee6a4cf8395dbd7d0f2ebdd4ec8017f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 0.9971

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/best-minecraft-hacked-client-game-hack PDF link annotation
    • http://uptodate.az/images/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://uptodate.az/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://uptodate.az/images/moon-active_GM406889139.pdfIn PDF document text
    • http://uptodate.az/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://uptodate.az/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://uptodate.az/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://uptodate.az/images/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://uptodate.az/images/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://uptodate.az/images/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://uptodate.az/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://uptodate.az/images/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://uptodate.az/images/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://uptodate.az/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://uptodate.az/images/how-to-robux_GM431946152.pdfIn PDF document text
    • http://uptodate.az/images/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://uptodate.az/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://uptodate.az/images/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://uptodate.az/images/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://uptodate.az/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://uptodate.az/images/can-you-get-free-robux-on-roblox_GM431946152.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_003_off00004870.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4870 25192 bytes
SHA-256: 3ddeeb180507a82b36beeceafc384d4c3ea9a2d3100f5b2fae035df6c72f484b
font_01_sfnt_off00008252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8252 18200 bytes
SHA-256: 05f9c4237b996275e109c4becad50b5cb7d88affc4d3e55964976ee2f9eee8f2

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