Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa51419136e05e0c…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 07:51:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: dff8877a0f98f0c14fd5a76d54857072 SHA-1: dd69db3aa53527afc55b5227c97a2393eb475c28 SHA-256: fa51419136e05e0c5754892496bfe85a9945cc8961c894be8a3ced21f79f9ce5
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 0.9980

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 http://netcdn.co/app/431946152/free-roblox-accounts-2021-with-robux-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/guardian-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-vip-admin-commands-with-all-permissions-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-critical-strike-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/dragon-ball-rage-roblox-cheat-engine-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-make-a-pretty-roblox-girl-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/unjailbreak-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/farming-simulator-money-cheat-roblox_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_off000030c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C3 21996 bytes
SHA-256: cfdead1bea39ecb7f13c4978d29029d0124e4f9ef8fe0753ffa29abb1fea33ef
font_01_sfnt_off0000617c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617C 19780 bytes
SHA-256: a55470c357d6117f87c66cfcc5dd60461d5ad292bd735cfee1ec5bb843310ba7

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