Malicious PDF — malware analysis report

Static analysis result for SHA-256 7769c0909e5759db…

MALICIOUS

PDF

46.9 KB Created: 2021-06-09 06:23:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 374f02bb84d579c6f880657b7e763be2 SHA-1: 5223a54fde72a45c3ae7cdee2b7fda10710c4e90 SHA-256: 7769c0909e5759db0e6e45b5b7623c48c935d399bf9b498cf64e265bf3e6dcc6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/want-free-robux-now-game-hack PDF link annotation
    • http://loriginedupain.org/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/packet-of-world-free-roblox_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://loriginedupain.org/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://loriginedupain.org/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/coun-master_GM406889139.pdfIn PDF document text
    • http://loriginedupain.org/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE5 24872 bytes
SHA-256: 49d08d039d40835a05ed17ef5311223192955b82e8dc9fb24e1a6f5549cb923c
font_01_sfnt_off0000894f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x894F 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off00009311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9311 18708 bytes
SHA-256: 5f94702a31d6046aa2c2fbe8ba92853dda380232048c5af340c53688e6b48410

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