Malicious PDF — malware analysis report

Static analysis result for SHA-256 04bc8c74d8faca40…

MALICIOUS

PDF

46.8 KB Created: 2021-05-19 12:32:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dbe847feb160a636809cd9c7bfb0bf0e SHA-1: a42ce0d30762e899451828ffecf90cfd7120eb69 SHA-256: 04bc8c74d8faca400d5729f3a669aa29c18bf2f7ca2c0c57cc84eb27a0a2c486
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games like Coin Master and Roblox. The document body and embedded URLs strongly suggest a social engineering lure designed to entice users to click through to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-coin-master-links-game-hack In PDF document text
    • http://www.bripi.pl/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/mcpe_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/roblox-system_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004932.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4932 25640 bytes
SHA-256: 030d5586faf2845c4fac3087dc80b0a8a4e436ea4baeefcdcf56cc6cc97762d7
font_01_sfnt_off000083db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83DB 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off000095f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F3 17880 bytes
SHA-256: dfe41e252eeea42f6a4072e9595d4435e06b86b6ad2d398cb4b971b8bcb02477

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