Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef1c3b19710a93c3…

MALICIOUS

PDF

43.2 KB Created: 2021-05-15 09:36:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ec44d4670c602192231ea1709bcf8b77 SHA-1: 2832856c6cb94e92770e745a39d9b1a274c275bd SHA-256: ef1c3b19710a93c3e4ccdda4115035095d4d53c619b61d8ad4f3e003c44f5433
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to redirectors and known malicious infrastructure, disguised as a download for Minecraft or game hacks. The presence of a visual download button and the lure of free in-game currency strongly suggest a social engineering tactic to trick users into clicking malicious links. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/479516143/minecraft-java-free-download-game-hack In PDF document text
    • http://lawpatron.ru/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-hack-cheat-engine_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/give-me-robux_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://lawpatron.ru/images/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/free-spins-for-coin-master-app_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
stream_003_off00004a84.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A84 25916 bytes
SHA-256: ed851c54ff7ab91aab5f232af7495c585d757977f31a10083dd0beae09ef314c
font_01_sfnt_off000085b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B1 18572 bytes
SHA-256: 84d994c9ca9b5ef406cb0cbd16402c282b50396e13120ada9f75f5d4c4d42292