Malicious PDF — malware analysis report

Static analysis result for SHA-256 765280df393d7aa0…

MALICIOUS

PDF

35.4 KB Created: 2021-06-30 05:10:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5caf6a441c8d3312d876574536225e0b SHA-1: 4018c2ab5c1b5f891cd24de7e39448f226d84e74 SHA-256: 765280df393d7aa00c40566f1ce41cd0b7a1d4be131d6a952d7e92f6b78b53cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirectors that host game hacks and cheats, such as 'roblox-dll-hack-download-game-hack'. The document body and embedded URLs strongly suggest a lure for users seeking unauthorized game modifications. The presence of these links and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful content.

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-dll-hack-download-game-hack In PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-admin-roblox-commende_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-how-to-buy-stuff-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/only-you-little-mix-cheat-codes-roblox-id_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/cheat-engine-cheat-tables-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-how-to-change-your-name-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-robux-2021-not-patched_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-trolling-outfit-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hack-para-tener-robux-2021-julio_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-devil_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-free-robux-game-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-robux-hack-no-survey-no-verification_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off000031d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D9 22740 bytes
SHA-256: 406ee366368c4bf3377e413003db4834fcdc29187d7f83850b837c308452eb74
font_01_sfnt_off000064de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DE 19160 bytes
SHA-256: bc35c1dd30d62cf5bfb3844f21067a985a1015709c1926e779fbbaa4771e143e