Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e56d95ad9be70d9…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 19:35:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 887bb061d3bca66f95662c81a9683bff SHA-1: 9f1418db30c8bf1115d0f3b94dbe4d81b653bde4 SHA-256: 3e56d95ad9be70d911cd082d9c85eec08081c7c0122d8a6359a2f8676d75e9c6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, masquerading as a free game hack generator. The document body text and heuristic firings confirm the lure is related to game hacks and free downloads, aiming to entice users to click the malicious link. No scripts were extracted, but the presence of malicious links and the nature of the lure strongly suggest a phishing or malware distribution attempt.

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/479516143/minecraft-free-download-laptop-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-life-hacks_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-free-robux-by-watching-a-video_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-tool-download_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-bloxburg-money-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-o-use-cheat-engine-in-roblox-tycoon_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-dungeon-quest-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-gratuitement_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/instalar-hacks-de-comandos-de-admin-para-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-get-hack-roblox-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-minecraft-maps-pe_GM479516143.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_off00002e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4F 22816 bytes
SHA-256: c670f496f86bfc5eb0f07274e200f6dd7911804739591dfb8bf828390765ed5f
font_01_sfnt_off00006130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6130 18756 bytes
SHA-256: f29aceae6fe995dd0e239e00de1876a4b8109b27bbb1ccd50f876a7058939993

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