Malicious PDF — malware analysis report

Static analysis result for SHA-256 671768aa1441a937…

MALICIOUS

PDF

41.9 KB Created: 2021-05-12 02:45:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1842520b30077c43f6d553863d1c63ea SHA-1: 9a8dd236b4e3f77b10b66eaadebf590ee52c2ee9 SHA-256: 671768aa1441a937a71514d167c357f8678f62815f96b32040d201601eb6c68f
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and free generators, a common lure for phishing or malware distribution. The ML classifier also strongly indicated maliciousness. The primary malicious URL identified is https://netcdn.xyz/app/406889139/blogspot-coin-master-game-hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/blogspot-coin-master-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-114-download_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/rbx-earn_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-pocket-edition-free_GM479516143.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_off000049af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49AF 24580 bytes
SHA-256: 610c5aef03f4811cdf8ac0042a659e7f819de6b6cb3a03766110374318aac3ca
font_01_sfnt_off00008171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8171 18300 bytes
SHA-256: 70576f8f42aad5e9047874363a3070dcdf9b24213dd74598ede00c9fec6f13a3

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