Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ad5f2471266a694…

MALICIOUS

PDF

43.2 KB Created: 2021-05-20 02:18:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 38216de7dcf898cf57a8c22cbe1e72f0 SHA-1: 35745e4f8d830b7fb61f9d6eeaa68218ced6c9a6 SHA-256: 5ad5f2471266a694d114ff92d94efa7ff479415ae9aabdd63a56b15fbd94da67
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and game hacks, directing users to a suspicious URL. The presence of embedded URLs and the ML classifier's high confidence indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/google-how-do-you-get-free-robux-game-hack PDF link annotation
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/pubg-uc-hack-2021_GM1330123889.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/tiktok-free-view-iphone-theme_GM835599320.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/pokemon-go-free-promo-codes-2021_GM1094591345.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/roblox-free-wings_GM431946152.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/pokemon-go-free-items_GM1094591345.pdfIn PDF document text
    • https://elearning.manbinjai.com/__statics/gudangsoal/files/free-spins-coin-master-march-2021_GM406889139.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
font_00_sfnt_off00004a9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A9F 25104 bytes
SHA-256: 9c51f502fdcfa58c4f394033fa875e6c408d30cfc7967c6309fa618591d88e14
font_01_sfnt_off00008441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8441 18972 bytes
SHA-256: 7e42234451cc840f7005e057c881a5adaeb6eb05dfbb8a23217c49a1ae6b06df

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