Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f721f6a2771865e…

MALICIOUS

PDF

34.7 KB Created: 2021-06-25 22:40:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 08e9a6a8a0ac9678abc0c05203d589c4 SHA-1: 484d9522cd618d89a169a7cba4f1de5718d299d5 SHA-256: 6f721f6a2771865e8d4636e2ef87e50d5ad94db7021e2c26821a6be199e3f0c0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. Heuristic firings indicate this is a common redirection tactic for malicious content. The ML classifier strongly flagged this PDF as malicious, suggesting it's designed to lead users to a malicious site, likely for further exploitation or malware delivery.

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.co/app/431946152/free-robux-cards-that-works-game-hack PDF link annotation
    • https://unsla.uns.ac.id:443/pgsd/repository/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-place-roblox_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/tiktok-free-view-followers_GM835599320.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/fightfor-glorton-free-l-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-20-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/cheats-to-speed-city-on-roblox_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/robux-generator_GM431946152.pdfIn PDF document text
    • https://unsla.uns.ac.id:443/pgsd/repository/how-to-get-boombox-for-free-in-roblox_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_off00002fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FAB 22236 bytes
SHA-256: 0f0b3b89fcac00743ac4ebc9d44309a1004b99fb787d4128f770f8859a20b753
font_01_sfnt_off0000613d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613D 19528 bytes
SHA-256: 7b7a0d86d98f8382184110d15de1c15ce7869f268b64cbcbc0f04a8d1c7aa970

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