Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b1b0bb8785f29b…

MALICIOUS

PDF

34.2 KB Created: 2021-06-23 17:33:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8860b5fc513b2cf700c44088c1611688 SHA-1: 4c999d8a5eaf209171e0a04f2aa89b2d75afbe3e SHA-256: 93b1b0bb8785f29b4375bbb119a101f5637f24acf4d6bc4dafcb072dd833b0b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'game hack' lure. The document body and heuristics indicate a clear intent to trick users into visiting a malicious URL, likely for further exploitation or malware delivery. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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/hack-roblox-ninja-legends-game-hack In PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/roblox-got-hacked-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-hack-code-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/roblox-how-to-make-a-free-t-shirt_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/roblox-shirt-id-free-shipping_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://elibrary.fl.unud.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://www.elibrary.fl.unud.ac.id/repository/games-that-give-you-free-robux_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_off00002f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F8D 22112 bytes
SHA-256: a0c9e122968ab1064f44cdd631f07e8cfadd664433bb21b0b3cfe12555c4ddd6
font_01_sfnt_off00006058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6058 19136 bytes
SHA-256: 71e623b7f49ba95857e2fe97f717dc3cb69125c1a9b30c64d99ae9ce98f98cf9

Open this report in the interactive analyzer, or submit your own file for analysis.