Malicious PDF — malware analysis report

Static analysis result for SHA-256 d862d1e3596829cf…

MALICIOUS

PDF

41.2 KB Created: 2021-05-12 05:05:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d8b3d487c3cb26d8bb5a99aff0a8e081 SHA-1: c33f741559d6bc54038c3a483ec38c2c11aa9745 SHA-256: d862d1e3596829cf1c9b2cae0e9a0a7dc9b326cd0c5da485e7e4fb3f4aab109a
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 targeting users interested in game hacks and free in-game currency. The document body and embedded links suggest a lure to download or access further malicious content, likely leading to a second-stage payload. No scripts were extracted, but the presence of numerous malicious URLs indicates a high likelihood of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/how-to-hack-coin-master-in-pc-game-hack In PDF document text
    • http://guimaq.com.br/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://guimaq.com.br/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • http://guimaq.com.br/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://guimaq.com.br/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://guimaq.com.br/images/coin-master-free-spins-hack-iphone_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_off000048cb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48CB 24052 bytes
SHA-256: 948861ea3a4142c70a4619889f76c09d462ed203f758649b5380a7451b9a4d28
font_01_sfnt_off00007f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F82 18036 bytes
SHA-256: 7b7faa2806f4651d8f2caf7de4c42b1705e796111e9b1cb5aed7a196d14508bf

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