Malicious PDF — malware analysis report

Static analysis result for SHA-256 83fba49946479076…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 23:04:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 33d433202e3f812756af100f89d230f7 SHA-1: cbedaf6aff95da8a4db3abcf56a93a84a0f92cee SHA-256: 83fba49946479076652f3312146760f0a68739e6e289f6194debbb3d9dd415d4
82 Risk Score

Malware Insights

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

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body and embedded URLs reinforce this, pointing to sites offering game cheats and hacks. This suggests a social engineering tactic to trick users into visiting a malicious site, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/mcpe-master-hack-unlimited-coins-latest-version-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/free-robux-rblx-market_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-hourly-giveaway_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hack-mod-menu-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-dlls_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/rbxboost-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-2021-roblox-accounts-site-v3rmillionnet_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-gift-card-code-generator-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/robloxmania-com-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-hack-in-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/cheat-engine-roblox-super-speed_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-bc-admin-leaked_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/howto-wall-hack-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-studio-download-for-pc-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/give-me-free-robux-plz_GM431946152.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
font_00_sfnt_off00002fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCF 22776 bytes
SHA-256: 67d4bb2cdcbbd9556e7542a16fb25ddb910383d9f186bde89ee7490f58c430a8
font_01_sfnt_off000062d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D2 19008 bytes
SHA-256: 9c09571335a502a0cd86718b4a7dcac7efdf37c0d727a62b975ff4a707afefa7

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