Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7a36070ffc9e31d…

MALICIOUS

PDF

45.8 KB Created: 2021-05-11 06:06:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 52f92f90c0680872f504cc9f1b700ea8 SHA-1: b34174cd295a5c7e99e89b15558071277e1eced5 SHA-256: f7a36070ffc9e31d2395e21b051b5b6310d09b434b6dc14e2d707eaa22b21208
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a heuristic firing for a 'game hack' redirector lure. The primary URL, https://netcdn.xyz/app/406889139/coin-master-ios-hack-download-game-hack, is presented as a way to get hacks for Coin Master. The document body, though heavily obfuscated, contains references to game hacks and the same URL, reinforcing the lure. The presence of multiple links to similar game-related content suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/406889139/coin-master-ios-hack-download-game-hack PDF link annotation
    • http://ristorantimaculan.it/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • http://ristorantimaculan.it/images/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://ristorantimaculan.it/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://ristorantimaculan.it/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://ristorantimaculan.it/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://ristorantimaculan.it/images/google-how-do-you-get-free-robux_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
stream_003_off0000487e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x487E 25308 bytes
SHA-256: 7a80b84f8ba3e123f4d16e36681ad7a3a03f14d36f682fbc7c29b817f3d95bd6
font_01_sfnt_off000082dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DD 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off00009065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9065 18296 bytes
SHA-256: 3a29b4d49c4689b3fed86d6dd7d7394cd0d46f52f4bf8aca92fb45191e1be305

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