Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ae057a446982d7…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 08:26:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f524236aea4922d3def53fd12834cb5a SHA-1: abce00e1be3add09ee21222ad7fbeefe526b00cf SHA-256: c7ae057a446982d7f0efa6d98bae28292049af1fc70de3c1e4cd1c6907149b14
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for a game hack, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the presence of multiple game-related lures suggests a social engineering attempt to trick users into visiting potentially harmful sites. No scripts were extracted, limiting further analysis of the payload.

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/como-hack-coin-master-game-hack PDF link annotation
    • https://mountainholidaytreks.com/userfiles/files/how-to-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-do-i-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/getrobux-now_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-online_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/fps-hacks-roblox-aimbot-not-pf-v21_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/static-moonactive-net_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-hack-and-get-free-robux_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_off000035f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35F9 22868 bytes
SHA-256: 9dc371b70e0eb5f2e6573ee377050b4346ed051d0b87ade8d79f07eeca9fdb6f
font_01_sfnt_off00006903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6903 18264 bytes
SHA-256: 5cb47b0ef94a76483d9f456b7bf8084a738c4f06f73b863c89be712ca91b2a0d

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