Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b6181063d57d2c8…

MALICIOUS

PDF

46.7 KB Created: 2021-06-10 14:47:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8c354ed75a63051c639c9a655e88ff4e SHA-1: 7107bd669110acf82aa8f3fcab83e686fdc35d48 SHA-256: 9b6181063d57d2c845ab4e46b99dfd6713294b669260a67d9f12fbc9b4231d2f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netcdn.tw/app/431946152/how-to-make-a-pretty-roblox-girl-free-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/is-it-ileagal-to-hack-on-a-game-in-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-robux-app_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/youtube-roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-in-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-and-coins_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
stream_004_off00005434.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5434 26680 bytes
SHA-256: f39ef83d7760d25be00b659ea9ab6be311d2bcd4d08eab77f592e5ccd166e0f2
font_01_sfnt_off00009175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9175 19264 bytes
SHA-256: 0ec2ec678f7c375d1c9f8ec60c2adf6f471a2dee5697a6d95e997725cdc3df17

Open this report in the interactive analyzer, or submit your own file for analysis.