Malicious PDF — malware analysis report

Static analysis result for SHA-256 9af999ee42a1963b…

MALICIOUS

PDF

33.3 KB Created: 2021-06-26 00:10:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 849da7846235d97a5f95b732d0be44bd SHA-1: 3328123d0e46f7a6ea6667ed7159b07e5b3fbe94 SHA-256: 9af999ee42a1963be64a62af8b749f1c45c63f639d9b3cb6eedb693be79f2acf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free Robux generators and game hacks. The document body and embedded URLs strongly suggest a social engineering lure to trick users into visiting potentially harmful sites. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/free-robux-generator-no-robot-verification-game-hack In PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-shinobi-life-cheat-engine-spins_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hacks-for-undertale-boss-3d-fights-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/cheat-engine-detected-by-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-play-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-free-without-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-change-roblox-name-for-free-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-money-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/tiktok-free-followers-mod-apk_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hacks-para-tener-robux-gratis_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC5 22640 bytes
SHA-256: e3862a5369e5d80b00cc70aaaa57a3a636252ac1fdef07758ba5a40342f7fde4
font_01_sfnt_off00005d50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D50 19072 bytes
SHA-256: e7f1824e88bb300dfe73d0982d2e974b610cf43959a10b1d34f5500451ac8bd8

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