Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a0ebd9f49df8b5…

MALICIOUS

PDF

34.6 KB Created: 2021-06-27 02:51:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 80ff2e6ee3e7bc77a47988de9c665b41 SHA-1: d749b0d9df9dbc29516601339d9c0503257da456 SHA-256: a9a0ebd9f49df8b5c8b170753ab19403ccddb467a5e8b6e871e376c8a48c6d5b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs that are disguised as game hacks and free currency generators for popular games like Roblox and Minecraft. The primary URL, http://netcdn.co/app/431946152/hack-para-counter-blox-roblox-game-hack, is flagged as a redirector for game hacks. The document body and heuristics indicate a lure to download or access potentially malicious content, likely leading to further exploitation or credential harvesting.

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/hack-para-counter-blox-roblox-game-hack PDF link annotation
    • https://htdvn.com/public/upload/files/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-roblox-clothes-from-stores_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/robux-prices_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/robux-get-com_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_off000030c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C2 22256 bytes
SHA-256: 4574227080c8704a3e97c8b499d2abed8acecdb4f56e8e8a1d617801945c221c
font_01_sfnt_off00006234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6234 19052 bytes
SHA-256: 28625b56abebfc205760d58249cba0137a248391df21cf8071a1a7d6b583c74a

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