Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7e97a2a446f7bb…

MALICIOUS

PDF

33.2 KB Created: 2021-07-05 21:39:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 366ea8d1bc7f4d0198065a091b62f064 SHA-1: 2e4053b1b5dad589137668426d0b3fd531d7c20f SHA-256: 2f7e97a2a446f7bb499001023d95d98c6e3e8378657b862da424eb2694b21d53
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link that redirects to known malicious infrastructure, specifically advertising a 'game hack' or generator. This lure is designed to trick users into visiting a potentially harmful site. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URL and heuristic firings point to a social engineering attack.

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/microsoft-roblox-game-hack In PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-account-taker_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-game_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/nitro-fun-cheat-codes-vip-roblox-id_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-link-app_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-robux-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-transparent-shirt-template-free-shipping_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/y8-games-free-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-cam-script-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-followers-on-tiktok-without-human-verification_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-robux-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-plaza-money_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-project-jojo-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/csgo-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-rocitizen-money-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-robuxapl_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-robux-hack-code_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-more-spins-on-coin-master-for-free_GM406889139.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_off00002c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C82 21996 bytes
SHA-256: 8d0e2aa2d1a6b85b2e6027e53726b9ff2acda5c59a93168cd4b0cc69acef3f69
font_01_sfnt_off00005d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0E 18908 bytes
SHA-256: b458eccdb163571359faea3efe9ec250c16272c1c71a93fa0e867ed8af06a913

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