Malicious PDF — malware analysis report

Static analysis result for SHA-256 7786b55c6bbd2845…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 20:19:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 68366f9d360d54c7ac1d26a27a8e833b SHA-1: 5f4f52201992ef5491b256cf837b5ea73b2d45bb SHA-256: 7786b55c6bbd28457effe20aeb41eef995df210e469e99014a50db93033292b4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a prominent call-to-action, luring users with promises of game hacks and free currency. The primary URL, http://netcdn.tw/app/406889139/mcpe-master-coin-hack-apk-game-hack, is associated with game hacking lures and likely leads to a malicious download or phishing page. No scripts were extracted, but the PDF structure and linked URLs indicate a social engineering attack.

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.tw/app/406889139/mcpe-master-coin-hack-apk-game-hack PDF link annotation
    • https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/roblox-vehicle-sim-money-hack_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/cheats-for-mega-gun-obby-roblox_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/wm-productions-hq-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/hack-roblox-robux-android_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-2021-still-working_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-codes-2021-october_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/hack-na-robux-bez-podawania-numeru-telefonu_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/roblox-rocitizens-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/roblox-phantom-forces-level-hack_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://www.orbai.ai/uploaded_files/userfiles/files/minecraft-bedrock-edition-download-pc-free_GM479516143.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_off000032d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32D4 23496 bytes
SHA-256: bed6a8cbc504c9b36a6e7944ba96740b14fbd43d34243f8b6ee9de02fd17846e
font_01_sfnt_off000067c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C4 18180 bytes
SHA-256: a4b029fe06f847910f4f73310ba83e3acfc8604b764c8cc50fdbf70b61a3fcde