Malicious PDF — malware analysis report

Static analysis result for SHA-256 7576deb8cc8b1b6b…

MALICIOUS

PDF

34.6 KB Created: 2021-07-09 03:02:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 68902deccc1a5cd3633ffc927053d554 SHA-1: 2fbc02d063a3672e22f577a64a1b74c0eecf4869 SHA-256: 7576deb8cc8b1b6b3d13e16d2cfa21cc794710dd1bef83079a0b3d20bf8a757f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a LOLBin command-execution lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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 http://netcdn.tw/app/431946152/robux-fun-hack-game-hack PDF link annotation
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/cmd-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-robux-extension_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-make-your-roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/roblox-hack-robux-2021-subscribe_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/hack-para-tener-robux_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://mtsnslemankota-eIn macro / runtime command snippet
    • 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_off00003023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3023 22556 bytes
SHA-256: a3e41cfa93a051092e5d3713694726d92dfa97d27aa064a58150a170113a4729
font_01_sfnt_off000062a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A7 18884 bytes
SHA-256: c1015eee087a13dc62c4aba5d792f044bb527228a7c6867863e8b6cb34361f4d

Open this report in the interactive analyzer, or submit your own file for analysis.