Malicious PDF — malware analysis report

Static analysis result for SHA-256 172b36d6ab34e63d…

MALICIOUS

PDF

34.1 KB Created: 2021-07-07 16:10:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c30689563cb6de1bb0165a54b1491176 SHA-1: bc86a823c85faf5d869abf839b6111b438edbb9f SHA-256: 172b36d6ab34e63d8e534f5ed39609903fa5f23126e17b416c419af95ee4b734
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators for popular games. The primary lure URL is http://netcdn.tw/app/431946152/how-to-hack-undertale-au-rpg-roblox-game-hack, which is flagged as a malicious redirector. This suggests the document is designed to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

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/how-to-hack-undertale-au-rpg-roblox-game-hack In PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-get-free-robux-easy-no-wait_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-royale-high-cheats-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-hack-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/get-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-any-person-in-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-use-no-clip-hacks-roblox-2021-novenmber_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-in-games_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/infinite-jump-roblox-cheat-download_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-color-name-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-roblox-download-pc_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-hack-only-today_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-cheat-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-very-easy_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/actual-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_off00002ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF7 21848 bytes
SHA-256: 5e9345a5ee78e05aa7102e69079bd74bf887ade51f29d8cb57e65c05d2a5c388
font_01_sfnt_off00005ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED9 19412 bytes
SHA-256: ad44df18915fa679922c12fe40b6e0f94939d93c78e153fc0fed93663bcc2d88

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