Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1bf45f4d1fd8bca…

MALICIOUS

PDF

44.1 KB Created: 2021-05-11 23:50:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 92b0fe48055c31017edea2eebc987dd6 SHA-1: f6c1f15789ed58b0e22695f3e054526b2cf40769 SHA-256: d1bf45f4d1fd8bcabe924c9851a57122eb8eb1d633968a9ef302de8d0bc4258f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs pointing to external resources that claim to offer hacks or generators for popular games like Coin Master and Roblox. The ML classifier flagged this PDF as malicious with high confidence. The presence of these links suggests an attempt to direct users to download potentially unwanted or malicious applications, likely as part of a phishing or scam campaign.

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/coin-master-apk-hack-game-hack In PDF document text
    • http://kingmusic.pl/images/spin-link_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/coin-master_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/www-robux_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://kingmusic.pl/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://kingmusic.pl/images/how-to-get-free-robux-without-surveys_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_off00004773.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4773 24740 bytes
SHA-256: 55598cbcb71b2b3f076d3ca0e47dd96a5d08a9adbea93db637187d9486079228
font_01_sfnt_off00008046.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8046 3060 bytes
SHA-256: 9144bea94f97f0b842206f303b318ebeaa792b5311e381603ebe891ea6718e8e
font_02_sfnt_off00008ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE2 17892 bytes
SHA-256: c20218c0ab10bf156f09886e8826d33298fcbe85625a719267aa59d24778aa2b

Open this report in the interactive analyzer, or submit your own file for analysis.