Malicious PDF — malware analysis report

Static analysis result for SHA-256 77dbbcad002eb8ee…

MALICIOUS

PDF

43.8 KB Created: 2021-05-15 00:58:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5822bd72c29520cae8bddcade9e18fd1 SHA-1: 00370cecb90f5653a599b37c2efe445f3f0f2ff1 SHA-256: 77dbbcad002eb8ee01cc62491a0240d6a045efdd18f73fca532ccc83ff74b469
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of "free generators" and "game hacks" to entice users. It contains multiple links, including one to a known malicious redirector infrastructure at `https://netcdn.xyz/app/406889139/haktuts-coin-master-free-spins-game-hack`. The presence of a visual download button further supports the malicious intent of directing users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/haktuts-coin-master-free-spins-game-hack In PDF document text
    • http://www.dolciariavarone.com/images/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/roblox-download_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/robux-adder_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/coin-master-free-spin-links-december-30-2021_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/get-robux-com_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://www.dolciariavarone.com/images/how-to-make-free-robux_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_off0000476a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x476A 24232 bytes
SHA-256: da3cba7d48a27d811fb6d3575c2376df64f5a877deb86759cf7b8517cb9a0b43
font_01_sfnt_off00007e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8A 2944 bytes
SHA-256: e8dca988325d5b5adea380508eed68725fcb814536e93cd420f224b7166adc23
font_02_sfnt_off000088b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B6 18196 bytes
SHA-256: d21f7c9777ff22c572caba6bc61bff535e054503ba9d308437b2513133ac2854

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