Malicious PDF — malware analysis report

Static analysis result for SHA-256 d483ff9b778f4c55…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 17:11:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: b78d99635bca2dba2deb631d1e6c0817 SHA-1: 033b0df8d8ca08d5a7a0c1fae4a5cdd2c13786c2 SHA-256: d483ff9b778f4c558cbbf2101e4cdaf80f6d22ada6c539d831718af0479e3419
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to known malicious redirectors and game hack lures, such as 'roblox-hack-download-pc-game-hack'. The presence of a visual download button and the overall theme suggest a social engineering attempt to trick users into downloading potentially malicious software. No scripts were extracted from this sample.

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/431946152/roblox-hack-download-pc-game-hack In PDF document text
    • http://stitqi.ac.id/website/repository/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/pokemon-go-free-item-bag_GM1094591345.pdfIn PDF document text
    • http://stitqi.ac.id/website//repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/how-to-change-my-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/where-tiktok-free-download_GM835599320.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/roblox-tutorial-hack_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/mistplay-hack-robux_GM431946152.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://stitqi.ac.id/website/repository/free-coins-for-coin-master-blogger_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_off00003029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3029 22360 bytes
SHA-256: 36b400ebb419c8de6030b68279a29f8c353b1975ee56c677e23bc7933e0700b1
font_01_sfnt_off00006206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6206 19316 bytes
SHA-256: f7e1569b35dd9ea38dfb046f4486bccf47f5ffb509dcfc8bcbaa088fb7facdac

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