Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b208de37f56670…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 13:39:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: f8f98969ade647158fb9f0386c8215ff SHA-1: 44773b1af0e1d77cfef25f08c9038362a127240f SHA-256: d0b208de37f56670cfb41533ad85665c64c81c5300fb9f9650bbbf51d1fc631f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as generators for popular games like Coin Master and Roblox. The document body explicitly mentions 'free coin master spin generator game hack' and includes a call-to-action, indicating a lure for users to click on these links. The primary function appears to be redirecting users to potentially malicious websites that may host further malware or phishing content.

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/406889139/free-coin-master-spin-generator-game-hack In PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/free-robux-no-survey-and-human-verification_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/rape-simulator_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/roblox-skin-free_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/how-do-doload-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/free-robux-genarator-no-survery_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/roblox-admin-hacks-download_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/roblox-hack-codes-2021_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/how-to-get-a-free-quirk-in-boku-no-roblox_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • https://pengacara-nbp.com/ckfinder/userfiles/files/robux-hack-2021-proof-no-inspect-element_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_off000030b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B1 22940 bytes
SHA-256: b74d958bcccc84f6a82a7885708fde1ebd8eaf4d4e598d1ce65948223b45dcbe
font_01_sfnt_off00006441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6441 18176 bytes
SHA-256: 24085bd8cf0a39edb314088fc51bab287d2573b99eac6d7314d98054e4f014d7

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