Malicious PDF — malware analysis report

Static analysis result for SHA-256 6075d8798a0b7256…

MALICIOUS

PDF

33.8 KB Created: 2021-07-03 13:38:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e8978cdd797d3cfac59dfaac80488409 SHA-1: c68fdd54ba69b8b470f35498d3e29af2fe4acb6f SHA-256: 6075d8798a0b725615e212b4ad57357683522b36cd42c95cac2d474c4d544486
180 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 currency to trick users into clicking malicious links. The document contains multiple embedded URLs, including one pointing to a known malicious redirector infrastructure and another to a raw IP address, both of which are designed to lead users to further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • 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/479516143/clients-minecraft-game-hack In PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-robux-codes_GM431946152.pdfPDF link annotation
    • http://110.232.83.89/slimsppks/repository/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-roblox-clothes-without-builders-club_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-training-free_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/drive-shaft-hack-roblox_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-simulator-free-model_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/wurst-commands_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-hack-xyz_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-robux-finish-obby-no-password_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_off000030e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E9 22604 bytes
SHA-256: abacd1904193b3c158c56541d90f55e12db777fefc0febf8ddd779c6bc9fe4d3
font_01_sfnt_off000062cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CD 17928 bytes
SHA-256: 7e7ab3f604136df531f2e92a0bf311d09ec166787ef8857d042cbe77ee495bd4

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