Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d67cd6c53c03bec…

MALICIOUS

PDF

43.1 KB Created: 2021-05-11 09:10:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 507944a521adac8e99194a8f982f4d6a SHA-1: f6789fae5bb8bd24332f6ee9cd15a6c8549e082b SHA-256: 5d67cd6c53c03becd6e7da357179eca6e26e5555d603c6cf825a6143bc7b9659
82 Risk Score

Malware Insights

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

The PDF document contains multiple links to websites offering "free Robux" or "game hacks", indicating a lure for users interested in such topics. The heuristic firings confirm the presence of external URIs and a specific lure for game hacks. The ML classifier strongly suggests maliciousness. The document likely redirects users to a malicious site to exploit them or deliver further malware.

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/431946152/how-to-get-free-robux-easy-no-download-game-hack PDF link annotation
    • http://muslib.unmus.ac.id//repository/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-apk-android-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_off00004964.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4964 25056 bytes
SHA-256: aef8e077c98781b3ae2ba98753a9d13b07249b059b5652cef661586ec7fa6f14
font_01_sfnt_off00008355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8355 19108 bytes
SHA-256: 7bc61c49a0b734df4d56b9cb8c894117daf111bfa68c773dcc76edca8f070452

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