Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3abcb5e562396d…

MALICIOUS

PDF

41.7 KB Created: 2021-05-13 14:19:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 23a7d39a3de30111f48f3eb519917dc9 SHA-1: 688b1b0e0296aa238af054e26632ca04d7025486 SHA-256: 2c3abcb5e562396d668393dfc74baefa6dc27eade6b1228f9b1d5e75d7602ec1
142 Risk Score

Malware Insights

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

The PDF contains multiple links to external websites, including one explicitly labeled as a 'game hack' redirector. The document body, though partially corrupted, also contains references to game hacks and URLs. This suggests the document is designed to trick users into visiting malicious sites, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/hack-coin-master-spin-apk-game-hack PDF link annotation
    • https://hotelartskathmandu.com/userfiles/files/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000486c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x486C 24932 bytes
SHA-256: 91586d469551dcf74b129b0b18a99a13235f1dd11d67c3446ee1d562676598ec
font_01_sfnt_off00008196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8196 17892 bytes
SHA-256: 38303170ac9c6ca0f2851823f29ecc879fead5c3d3518135c6ab8fad8fa3f0a9

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