Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c399ce8c751fd6…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 23:46:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 157cc0c4ad423a85e3ab34a7918aed0c SHA-1: e3f84ead0436b768eca13ef0291cb660f9c3727e SHA-256: 63c399ce8c751fd6836593a5be2e4f5fd8a5a2354834a9cc1e5b6495dcd86479
82 Risk Score

Malware Insights

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

The PDF document contains a link disguised as a 'free generator / game hack' lure, directing users to a suspicious URL. This is a common social engineering tactic to entice users into visiting potentially malicious sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/mcpe-optifine-game-hack PDF link annotation
    • https://library.institutpendidikan.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/tiktok-free-real-followers_GM835599320.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-help-free-robux_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_004_off0000526a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x526A 25256 bytes
SHA-256: 1bde0970afda4271f52e9e7350816d1f1f00dab0784a1e6c4fdab2b783569fd0
font_01_sfnt_off00008b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3D 17516 bytes
SHA-256: 3222fce1ec24f9fe4c9c7187e94a50dcd616af103cb5e0df495c7ad715510956

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