Malicious PDF — malware analysis report

Static analysis result for SHA-256 797683bf61d6b148…

MALICIOUS

PDF

33.2 KB Created: 2021-07-03 14:55:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 986a54451cadf4351eb6133fd5f52920 SHA-1: 546f0e4b88a074c7dec9e286bc22c4436f69650e SHA-256: 797683bf61d6b1484c45df99c17d568172e3c102861b32dd596f0ce15d8336c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links, including one to a known malicious redirector infrastructure, that promise game hacks and in-game currency. The document body and extracted URLs suggest a lure for users interested in obtaining free Robux or other game-related advantages. The primary goal appears to be directing users to potentially malicious websites or initiating further downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • 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.
  • 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
  • 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-robux-game-hack In PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/roblox-script-hack-booga-booga_GM431946152.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/roblox-hacks-for-star-wars-awakening_GM431946152.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/como-hackear-roblox-para-que-te-de-robux_GM431946152.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/www-robux-us_GM431946152.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/roblox-how-to-get-free-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/roblox-lumber-tycoon-2-hack-windows-6_GM431946152.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/free-godzilla-stuff-roblox_GM431946152.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/roblox-galacxy-cheats_GM431946152.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/how-to-hack-an-roblox-account-2021-november_GM431946152.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/pubg-uc-carding-in-pakistan_GM1330123889.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/free-tiktok-app_GM835599320.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://clinicamanila.com/ckfinder/userfiles/files/minecraft-bedrock-hacks_GM479516143.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_off00002b6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B6F 22764 bytes
SHA-256: ab59d0ee068efc2d87bfef675ce9a991dbee6a815f5d6d38316c028a012288b7
font_01_sfnt_off00005e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6C 18552 bytes
SHA-256: 8543300a06bd5f627884b1343b9e13e647e2bd11d135b956d7c374330d8d3701

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