Malicious PDF — malware analysis report

Static analysis result for SHA-256 50e8143f48e79be8…

MALICIOUS

PDF

33.5 KB Created: 2021-07-08 23:10:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 9472e0b4083252cb9e4cbdbd320e0474 SHA-1: e3cbacfbc562d8ded53d63996a12b728e3853fde SHA-256: 50e8143f48e79be818450f8003b5bdbcc62ee51b2c5e101f125b67f8ae773936
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a known malicious redirector infrastructure pointing to a 'robux hack generator'. The document body and heuristics suggest a lure for game-related cheats or hacks, likely intended to lead users to a malicious site. No scripts were extracted, but the presence of embedded URLs and the nature of the lure indicate a phishing or scam attempt.

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/robux-hack-generator-game-hack In PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacking-roblox-may-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/codes-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robux-premium_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-admin-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-kick-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-bobux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-supreme-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-a-free-game-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-bandana-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/is-free-robux-real_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_off00002d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5E 22220 bytes
SHA-256: c302f919eefd932ecd80816423b7d23ba7640d4afd173745c1478bd4c1ba8253
font_01_sfnt_off00005e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E66 18824 bytes
SHA-256: 6a2f4fb47bcac7a1427eb84fb186ae35d3638566a93e34d85c8a35338f058712

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