Malicious PDF — malware analysis report

Static analysis result for SHA-256 994f3ff317769129…

MALICIOUS

PDF

35.1 KB Created: 2021-07-02 02:57:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: c1bfac8dd333e2584c3a5fa478eb2331 SHA-1: 0caa22ce227fc33fb829fddc56e2d9951b94f325 SHA-256: 994f3ff3177691293e9cf83762e0fe658fe86354654d3dde34938e40c8dfee45
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to websites offering game hacks and free items, such as 'Roblox Vip Server Hack'. One of the primary links, http://netcdn.co/app/431946152/roblox-vip-server-hack-game-hack, is flagged as a malicious redirector. The document's content and the presence of malicious redirector links strongly suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

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-vip-server-hack-game-hack In PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-roblox-no-hacks_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/cerberus-download-free-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-unused-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-games-with-artmoney_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/does-roblox-ever-give-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-hack-the-bank_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/como-conseguir-ropa-gratis-en-roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/play-jailbreak-for-free-without-installing-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/youtube-roblox-free-builders-club_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/fly-hack-roblox-download-working-2021_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/prison-vs-pro-vs-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/free-clothes-of-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/2021-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/best-free-exploit-roblox-bing_GM431946152.pdfIn PDF document text
    • http://elearning.min2bolmong.sch.id/__statics/gudangsoal/files/roblox-cheat-robux-generator-2021_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_off00003087.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3087 22824 bytes
SHA-256: 3143623e904044f318488959883ed43eddf3451eb95a6b6815e63baaf582d230
font_01_sfnt_off000063d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D7 19200 bytes
SHA-256: 083ec644555b269349f9468dbb657bcd3cf90dbeac808b66d40a0421002fe182

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