Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc1c6bd1f699e19e…

MALICIOUS

PDF

33.3 KB Created: 2021-07-06 06:53:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5c5db402c1fcbf3a32c994daad8ac8e6 SHA-1: d82f6838e6a61849d860cf9d719ccfa6e039af82 SHA-256: cc1c6bd1f699e19e520036bfc846161b923d0b393bed86ac79c4a4e1afd56588
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free currency, directing users to a known malicious redirector. This redirector, in turn, serves further malicious PDFs hosted on slim.sisminkada.net. The ML classifier strongly indicates maliciousness, and the overall pattern suggests a phishing or scam campaign designed to lead users to potentially harmful content.

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/can-you-get-free-robux-on-roblox-game-hack In PDF document text
    • http://slim.sisminkada.net/repository/comment-hacker-roblox-robux-tuto-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/tiktok-free-view-iphone-apps_GM835599320.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/ho-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-tell-if-your-account-is-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/can-i-get-roblox-hacks-as-a-google-extension_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-use-cheat-engine-to-get-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-10-000-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/pubg-uc-redeem-code-midasbuy_GM1330123889.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hackear-meepcity-roblox_GM431946152.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_off00002e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E1E 21396 bytes
SHA-256: 64535331d49a72f5dc19bace87fcbce802aa6f7dcbb019f170ec89de687882a4
font_01_sfnt_off00005cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD6 19056 bytes
SHA-256: 212cafc25ec0536741ac5c1aa90543f36b34a777adc44243741e4ba36ab4d37b