Malicious PDF — malware analysis report

Static analysis result for SHA-256 6785a387653c1486…

MALICIOUS

PDF

35.6 KB Created: 2021-07-05 20:18:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 34596e9967780dda504ef3c667ecd9d3 SHA-1: bb1e3f24385bcb7b7ac520965673effaaa3deb98 SHA-256: 6785a387653c14864d91ddfb67970e459def5bbb5e40c7df6063d3842b6bc449
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free Robux and game hacks to entice users. It contains embedded links, including one to a known malicious redirector at http://netcdn.tw/app/431946152/free-robux-games-that-actually-work-2021-game-hack. The document's structure and embedded URLs strongly suggest it is designed to lead the user to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-robux-games-that-actually-work-2021-game-hack In PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/roblox-robux-money-hack-tool-generator_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/cheat-blok-piece-roblox_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/junio-2021-hack-robux-en-roblox_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-have-free-points-for-robux-in-oprewards_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/roblox-doungnquest-hack_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/roblox-execute-script-hack-download_GM431946152.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/pokemon-go-free-incubator_GM1094591345.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://www.alajwakh.com/uploaded_files/userfiles/files/robux-survey_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_off0000320a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x320A 21952 bytes
SHA-256: e134ced0cac8343caa79eb13a0adbc105ca35e493b6b14a9ecf2c557ae2d6ea3
font_01_sfnt_off00006254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6254 20272 bytes
SHA-256: 3dcbb05b4dce0a2bab4a10db55923dcb732eb0f4a2e9bcb9735c66d658b8cabb

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