Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a7397072bdbbbdc…

MALICIOUS

PDF

24.8 KB Created: 2021-07-03 22:45:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 079de0e1e7a4015a90f5550118e6bdb6 SHA-1: 78708028dde4da8701b765384727673bc5dc5a25 SHA-256: 5a7397072bdbbbdc69c17376b51720d2397510c4e93e01087acd7b652228a44d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are flagged as malicious redirectors, specifically targeting users interested in game hacks and free currency for games like Roblox and Coin Master. The embedded URLs likely lead to phishing sites or further malware distribution, aiming to exploit user interest in obtaining in-game advantages. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.tw/app/431946152/earn-free-robux-on-roblox-game-hack In PDF document text
    • http://perpus.polimarim.online/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-noot-noot-hack-roblox-id_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-how-to-make-your-own-shirt-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-money-on-tower-of-defense-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-codes-w018_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-hack-site-roblox-unlimited_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-hack-someone-on-roblox-and-steal-theyre-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-no-email-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robux-hack-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/tiktok-free-gas-hack_GM835599320.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A7 22292 bytes
SHA-256: 1859665a47829129db6fd31b36f004d8edf3cee269c58e9e5b2714a3afad0e58

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