Malicious PDF — malware analysis report

Static analysis result for SHA-256 9beef9b9a037a503…

MALICIOUS

PDF

45.7 KB Created: 2021-05-12 22:43:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2986edb9bfdfca4f03445172bfc4f091 SHA-1: c9829e18c72c5aa35f5c43ba5931e8caef78fb7c SHA-256: 9beef9b9a037a50352e5c254c95dc013d7d89e7737ef0a6246130418d0f68196
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The embedded URLs, including the primary redirector at `https://netcdn.xyz/app/406889139/coin-master-daily-free-spins-link-2021-today-game-hack`, are associated with known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow, likely intended to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.xyz/app/406889139/coin-master-daily-free-spins-link-2021-today-game-hack In PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/robux-apk_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://www.dc-itsolutions.com/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a96.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A96 25112 bytes
SHA-256: 7d11a67a230e8e67a48c2c4c18fc0969c33adfed28fefa72c51afc34f4b79556
font_01_sfnt_off00008329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8329 19052 bytes
SHA-256: eaae1ca97f535f7f19a3027bb05b0c0b9ff144311ff5366650acbeeb70d65258
font_02_sfnt_off0000a7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7A3 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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