Malicious PDF — malware analysis report

Static analysis result for SHA-256 53e45af5a5d28e48…

MALICIOUS

PDF

35.5 KB Created: 2021-06-29 21:58:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 2771eb50f80f15c9b202a160034d50cd SHA-1: 0b52f6a430930ce8b07656501963c452a65f9e32 SHA-256: 53e45af5a5d28e489cad4a39238b4771ca08feddc34362af140c95e57ba3d483
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of free game hacks and in-game items to trick users into clicking malicious links. The document contains multiple embedded URLs pointing to redirectors and potentially malicious content, indicating a phishing or social engineering attack. The presence of PDF-specific heuristics for malicious redirectors and game hack lures strongly supports this conclusion.

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.co/app/431946152/roblox-nike-shirt-free-shipping-game-hack In PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/tiktok-free-up-space_GM835599320.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacker-names-list-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-200-spin-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-roblox-accounts-password_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-speed-hack-script-v3rmilion_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/jump-cheat-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_off000030f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F3 23068 bytes
SHA-256: fbd84549f1189ce97be363b2b8a40115e1c3bd977b2372ca5f5719416857f631
font_01_sfnt_off000064fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FE 19384 bytes
SHA-256: ffb92e20e4d0d79597e96645e71847ba75f7e986afe1b744f5e6010450601f17

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