Malicious PDF — malware analysis report

Static analysis result for SHA-256 887cc41456d3ab64…

MALICIOUS

PDF

46.3 KB Created: 2021-06-09 01:49:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 49457b3891f1f391c3a4a84f1675922b SHA-1: e8efcf8f50ebbcaf020f90c13b9d31ffa4feae96 SHA-256: 887cc41456d3ab64636f335b9836193bd63ae8c756e9a5c5b12db7b0798949f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'game hacks' and 'generators' to lure users. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures strongly suggest an intent to redirect users to potentially malicious websites for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/hack-de-roblox-robux-infinito-game-hack In PDF document text
    • https://lesegais.ru/images/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://lesegais.ru/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://lesegais.ru/images/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • https://lesegais.ru/images/roblox-kids-free-robux_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/tiktok-free-likercom_GM835599320.pdfIn PDF document text
    • https://lesegais.ru/images/how-to-get-free-robux-with-no-verify_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://lesegais.ru/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://lesegais.ru/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://lesegais.ru/images/coin-master-free-online_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
stream_004_off000054f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54F0 25736 bytes
SHA-256: fdafcbc4cc52b3a8b6202229057d3995c66664fb64604ba4591ba9fc5dd20617
font_01_sfnt_off00009131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9131 18716 bytes
SHA-256: c9496c24e0ecb002fe4aee2d6b5e330dc5d81470949f345b44cba1eb3029c405

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