Malicious PDF — malware analysis report

Static analysis result for SHA-256 41f84cd386ed0d2f…

MALICIOUS

PDF

42.7 KB Created: 2021-05-17 00:11:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8013ecdd632dcc95efef811e2aa5884f SHA-1: 59bbfdaa4d08d572e3da1be0269c6e4750dd1f2d SHA-256: 41f84cd386ed0d2fff7959eda8c7f6f0b84b1c6c56a0d6a10078c0d46020355c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious link disguised as a game hack generator, which redirects to known malicious infrastructure. The presence of multiple similar URLs and the ML classifier output strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering lure designed to redirect users to potentially harmful content.

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/coin-master-hack-programers-game-hack In PDF document text
    • http://www.bripi.pl/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-master-map_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/android-coin-master-hack_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_003_off0000493e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x493E 25344 bytes
SHA-256: 904578135124dce38d6181a7a33260c4a47c0829fb92495bc8361fccaab7e65f
font_01_sfnt_off0000840b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x840B 18416 bytes
SHA-256: 9b1b86d518bbcbecce2ac7037f2b10fa6fa9b3d2e28cf0c2cd03817ae8459785

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