Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a76f985e70d370…

MALICIOUS

PDF

28.9 KB Created: 2021-07-06 07:20:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3cdc5c792fe6a5afbd91380546a2d7bc SHA-1: f34806d44e2d076776e520c17e2fb0108ccbceff SHA-256: a9a76f985e70d3706d2d9f3fafaf91185f9e7c8031c75faa5fcf7e046a8ae84c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links designed to lure users into clicking on them by promising game hacks and free currency. The primary link, http://netcdn.tw/app/431946152/roblox-hack-tool-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a social engineering tactic to drive traffic to potentially malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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/roblox-hack-tool-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-eat-or-diy-game-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-livr-emerald-giveaways-roblox-direct_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-robux-and-tix-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/pokemon-go-kanto-free-pass_GM1094591345.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE4 21856 bytes
SHA-256: 694e1f453b3168b72cee74d7118368f2a4e19f68663e6c7c63bfb471a711b5ce