Malicious PDF — malware analysis report

Static analysis result for SHA-256 1297d14fc9820b22…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 00:30:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8486a838339198302a3440e2ca92cc41 SHA-1: 21954d771ecfc9bd9891c8c441ebbad77e69b2e3 SHA-256: 1297d14fc9820b22d9f3f5f3fd8e3bbe1662206b1ad61b61769575f79fffd688
220 Risk Score

Malware Insights

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

This PDF document employs a lure of game hacks and free in-game currency to trick users into clicking malicious links. The document contains multiple links to known malicious redirectors and IP addresses hosting further malicious content, likely designed to download and execute a second-stage payload. The presence of 'cmd-juegos-hack-roblox-2021' in the document body suggests an attempt to exploit client execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/what-are-points-for-in-roblox-game-hack In PDF document text
    • http://111.68.26.74/widyapustaka/repository/minecraft-apk-114-4_GM479516143.pdfPDF link annotation
    • http://111.68.26.74/widyapustaka/repository/chicago-2021-free-model-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-robux-from-a-hat_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/google-moon-active_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-blood-moon-tycoon-hack-vechiles_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-hack-level-7-download_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-promocode-hack-2021-pastebin_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/cheat-engine-fonctionne-sur-quel-jeu-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/cheat-terminal-railway-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/comandos-cmd-juegos-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/where-to-find-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hacker-pants-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/cool-items-roblox-free-and-how-to-get-them_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-roblox-mad-city_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_off00003090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3090 23068 bytes
SHA-256: c32f82cf4c00d1766ff1c02ea45a12afa103019801db6129ad38fa0298d8324d
font_01_sfnt_off0000642c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x642C 19392 bytes
SHA-256: 6ee4c6c2bc36e9485c1d8e6afcd62cc66d60928b15140094b1d26536a429f836

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