Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a4c5ea658ddc888…

MALICIOUS

PDF

46.2 KB Created: 2021-05-11 17:36:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 66dbe38b439b650db16b683c99dc0602 SHA-1: b21aff987c4864703945e8f921295b08fbd014fc SHA-256: 0a4c5ea658ddc8887dee9b450418c9ca6196e2a9e945b5df7144272d7d6cd706
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, using 'game hack' and 'free generator' themes to entice users. It contains multiple links to known malicious redirector infrastructure, including the primary URL https://netcdn.xyz/app/431946152/how-to-hack-roblox-2021-game-hack. The document's structure and embedded links suggest it is intended to lead users to malicious websites, likely for further exploitation or malware delivery.

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/431946152/how-to-hack-roblox-2021-game-hack In PDF document text
    • http://beautyforyou.fr/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/roblox-comroblox_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/fbchampion_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://beautyforyou.fr/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://beautyforyou.fr/images/blox-land-free-robux_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_off00004905.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4905 26592 bytes
SHA-256: 1208847074d6dbd0ea8976533142a078076cfe6e9d1179d1ac4abcea98c3d9c7
font_01_sfnt_off00008626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8626 2984 bytes
SHA-256: 8535a1e331bc45aae6d1f80a294c2a669c72a01721acaa10f0aa865fec8a437f
font_02_sfnt_off00009076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9076 18748 bytes
SHA-256: 82830e686af2a9787477f8716b243dfdc4e826425849e85a18f820c98dc205f5

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