Malicious PDF — malware analysis report

Static analysis result for SHA-256 77359af719f0064f…

MALICIOUS

PDF

45.6 KB Created: 2021-05-17 03:35:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0c26244507014d68a52dabb331176fbb SHA-1: ed83a2014217855ca6c666f69b1602d9478a7b36 SHA-256: 77359af719f0064f7dad7682bdeef5f6ec7e2ed032017f70386fd8f3950cb106
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically mentioning 'free Robux'. The document body and extracted URLs reinforce this lure, pointing to sites offering game-related cheats and codes. While no scripts were directly extracted, the PDF structure and embedded links suggest a phishing or scam attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/free-robux-roblox-promo-codes-game-hack PDF link annotation
    • http://finettifrs.it/images/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/2021-roblox_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/coin-master-free-spin-ml_GM406889139.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
stream_003_off000049ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49EE 26432 bytes
SHA-256: 42d62d8165137891c63365da8ef06405dff142660c712787c3984abbedff3a14
font_01_sfnt_off0000851f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851F 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00008ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED0 18676 bytes
SHA-256: 9297a3cb5fba7ca587652f513aa1222127deb04773b45a9c0f6482a9c793d56f

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