Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca1a86a5a1fbfab…

MALICIOUS

PDF

43.4 KB Created: 2021-05-16 05:01:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 34a70455f1114fb0c432c23b42e2288e SHA-1: 22a42562b3570b01e3c8028138f5b1fb0178e3eb SHA-256: 9ca1a86a5a1fbfab2155c8b8fa385dc1d6b6512f92ce73fc4a49fb1843cc54e6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are flagged as malicious redirectors, specifically leading to a 'free generator / game hack' lure. The presence of numerous related URLs suggests a campaign focused on tricking users into visiting potentially harmful sites. No scripts were extracted, but the document's structure and embedded links strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-robux-codes-no-verification-2021-game-hack In PDF document text
    • http://androidthai.in.th/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/spin-link_GM406889139.pdfIn PDF document text
    • http://androidthai.in.th/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://androidthai.in.th/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://androidthai.in.th/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://androidthai.in.th/images/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://androidthai.in.th/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://androidthai.in.th/images/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://androidthai.in.th/images/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://androidthai.in.th/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://androidthai.in.th/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://androidthai.in.th/images/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://androidthai.in.th/images/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://androidthai.in.th/images/coin-master-free-spins-daily-link-game-mod_GM406889139.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_off00004a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A1B 26344 bytes
SHA-256: 11fe5089156a423b9f4626efcb4132fd3806aab3d40d71582a58022001cbfdd2
font_01_sfnt_off0000847f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x847F 19176 bytes
SHA-256: db1e34f64d78c47646929d75ef8e7d82dfccacc985d29653851fea35b3c0bf96

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