Malicious PDF — malware analysis report

Static analysis result for SHA-256 d698917987ae47a4…

MALICIOUS

PDF

33.2 KB Created: 2021-07-06 02:57:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: cc749d511d6bbb710b354297f57ed529 SHA-1: 0573a89c96dd181e6d68d0afeaf6307659f79e0f SHA-256: d698917987ae47a491de6bd55b7b86029dbaa973d4cde2e63b0da17543ff274c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/479516143/how-to-get-hacks-on-minecraft-game-hack. The document body and embedded links suggest a lure for game-related cheats and currency, which is a common social engineering tactic. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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/479516143/how-to-get-hacks-on-minecraft-game-hack In PDF document text
    • https://www.tdbaska.hr/files/hack-roblox-script-no-viros_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/hacks-para-roblox-2021-descargar_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/chreck-cashed-v3-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/beast-mode-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-roblox-followers_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://www.tdbaska.hr/files/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/free-bear-mask-roblox_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/roblox-hack-download-jailbreak-noclip_GM431946152.pdfIn PDF document text
    • https://www.tdbaska.hr/files/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://www.tdbaska.hr/files/how-to-hack-to-get-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.tdbaska.hr/files/coin-master-connection-lost-hack_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_off00002e3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3E 22116 bytes
SHA-256: 70118a39691b4edda5b5221862c3f9b6344ada7c355240a70940776cac0585d8
font_01_sfnt_off00005ee0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE0 18332 bytes
SHA-256: 7074210b4cd1020dcfe52daa4947dc8d4893434919d69b6619189279454e1a4d

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