Malicious PDF — malware analysis report

Static analysis result for SHA-256 9696cdf2645f3fbf…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 18:56:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 592ed227823877ff664fceb0bf2ee5e9 SHA-1: 1b23dcec8203402922a08301cf29f9e6b448d278 SHA-256: 9696cdf2645f3fbf4edd223bfefc4788c5ae1ad2524b3e003ed6b04861f3088f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/431946152/microsoft-bing-free-robux-game-hack. The document body and heuristics indicate a lure for game-related cheats or hacks, likely to download further malware. No scripts were extracted, but the presence of embedded URLs and the nature of the lure suggest a phishing or social engineering attack.

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/microsoft-bing-free-robux-game-hack In PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-gamepass-script-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-tips-and-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/tiktok-free-followers-2021_GM835599320.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/apoc-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-this-game-has-shut-down-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/hack-robux-2021-do-inspect-element_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-cubes-of-the-gods-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-promotional-codes-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-robux-forum_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-cool-free-items_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-admin-2021-roblox-game_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/byfantics-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-free-noob-accounts_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_off00002e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E43 22956 bytes
SHA-256: 12098e2e199b5116ff4e74914afc976ed069c3faf58c1b561a5489ab27123887
font_01_sfnt_off000061ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CE 19136 bytes
SHA-256: 6574868ecd516cdc95e6406792cdbd3216c6b5fe6b50fcaddc0876f557b9cdc5

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