Malicious PDF — malware analysis report

Static analysis result for SHA-256 d71b745a66b4f14c…

MALICIOUS

PDF

33.1 KB Created: 2021-07-04 03:25:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dc55a949c1c5b7604fe5e537a676d82b SHA-1: ac024f23829c0b0d3550dcc90ddd62309da44a16 SHA-256: d71b745a66b4f14c58c103064baa027517d42d0c8b165e80704b4f0c2b71399b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically promoting game hacks and free currency. The document body and heuristics indicate a lure for game-related exploits, likely serving as a phishing or malware distribution vector. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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-store-robux-game-hack In PDF document text
    • http://www.readandenjoy.ae/userfiles/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/roblox-generator_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/roblox-but_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/how-to-hack-peoples-accounts-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/roblox-cheat-engine-hacks-admin_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/roblox-robux-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/get-free-robux-by-doing-surveys_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CAE 21740 bytes
SHA-256: c82fc1ef32b4fac920ad4f09813a1af758abc5dc8c792300fe11952689e5692b
font_01_sfnt_off00005c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C40 18972 bytes
SHA-256: 99e3af7f7228a133bb0caa35a407188509e92b0a09c57b0013d5f4a883a27c32

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