Malicious PDF — malware analysis report

Static analysis result for SHA-256 313b369f9cd29ae9…

MALICIOUS

PDF

34.8 KB Created: 2021-07-01 20:32:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 400597f0633aca3d1e85d9c3f78df2cc SHA-1: 0f28d8205152fc53c9b1ba56adbda10174c4ad7f SHA-256: 313b369f9cd29ae9068d74601a6b4d626f3b7ea5a6c7e65097975eed65962078
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to malicious infrastructure, specifically advertising free game hacks and currency. The primary malicious URL identified is http://netcdn.co/app/431946152/www-bandicam-com-free-robux-game-hack. This indicates a phishing or scam attempt designed to lure users to potentially harmful sites.

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/www-bandicam-com-free-robux-game-hack In PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-hacks-jail-break_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-do-doload-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/imaflynmidget-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/enchantix-high-royale-high-roblox-hack-baking_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/live-free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/trolling-with-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-free-skin-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-pin-codes-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-roblox-accounts-with-obc-and-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-roblox-hats-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-roblox-without-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/nija-legend-roblox-hack_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_off00002f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F09 22468 bytes
SHA-256: 38ac596083da7a0c3a384b30442805e79d67423107129381e9445bcca3382d71
font_01_sfnt_off0000611f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611F 19632 bytes
SHA-256: a90bb39b25c0987361f0dd43cf5b570ac3dec1b222341e2146909a9d8e2c4371