Malicious PDF — malware analysis report

Static analysis result for SHA-256 d968cc60c4503933…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 13:54:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 259f132b1c18d963a3e4e407c75d8df1 SHA-1: 1f686d0c0cd95d24f7c338e49b4250c17ca563a0 SHA-256: d968cc60c4503933e990bfb7cec5921972401da804b15034020a1d649c291d8d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox and Coin Master. These links are designed to lure users into clicking, likely leading to further malicious downloads or phishing attempts. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/youtube-free-roblox-game-hack In PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-farming-simulator-hacks_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/robux-online_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-free-robux-for-free-in-2-mins_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-free-hats-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/tiktok-free-20-likes_GM835599320.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-roblox-accounts-with-robix_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/robux-miner_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/assassin-roblox-cheats-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-free-audio_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/actual-working-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/buy-free-clofing-on-roblox-computer_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-mod-version-free-download_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_off000030a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A2 21576 bytes
SHA-256: 0ec6b2ae0227eb620c2844897f1ee62ea66a3d5abd072d14acece56402f4076c
font_01_sfnt_off00005fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE9 19056 bytes
SHA-256: 580de5f194bc4b2f5a1bfc86da6da4ef9f3e4db48adf27ac979a62b5e3e23ab9