Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68e39eae4920e30…

MALICIOUS

PDF

48.7 KB Created: 2021-06-11 05:41:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3856a32801b917cd17d92b89fb6e71e1 SHA-1: 18bcc93a6076e4084d20eb255241c26acfdc6c94 SHA-256: c68e39eae4920e30c0b844dad4ddf9958f262dac28b53618ab13569615296f3e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to a known malicious domain, masquerading as a 'game hack' generator. The document body and embedded URLs suggest a lure for users seeking in-game currency or cheats, likely leading to further malware or phishing. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/cool-hacked-weapons-roblox-script-game-hack In PDF document text
    • http://elibrary.uniyap.ac.id/repository/get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/how-do-u-hack-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/how-to-get-free-robux-on-roblox-on-ipad-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/how-to-get-free-robux-really-works-easy_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/gear-hack-roblox-building_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/roblox-ro-hacks_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/cch-ly-robux-free-tren-dien-thoai_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/roblox-hack-client-android_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/hack-game-roblox-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/how-to-cheat-in-roblox-find-the-doges_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/robux-cheaten-ohne_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/roblox-scripts-free_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/free-roblox-accounts-2021-may_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/roblox-easy-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/wahoo-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/youtube-roblox-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/free-robux-without-phone-number_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/games-you-can-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.uniyap.ac.id/repository/roblox-hack-programm_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50BC 26012 bytes
SHA-256: fb8d15b7576694f0323724a997f6d2269c79a894b04fb8fdf978ae819ddcec10
font_01_sfnt_off00008cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBD 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9964 18952 bytes
SHA-256: f0d71b526cf17058d5bfd79b650f21eb9b78ca64c63f57a62c142caf64595cdd

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