Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb08e9074c57b181…

MALICIOUS

PDF

43.5 KB Created: 2021-05-11 19:01:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 481b998d5ae5b59a5018a0b261c14390 SHA-1: a2d2feda68a39cbf15ec8856430188078777dbc3 SHA-256: cb08e9074c57b1817555cafcf6fdd97ff6ce06b73aa31198e97adcaeb978d5e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The embedded URL and document body content both promote a 'Coin Master Download Hack', aiming to trick users into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure itself likely facilitates the redirection, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-download-hack-game-hack In PDF document text
    • http://addair.co.uk/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://addair.co.uk/images/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://addair.co.uk/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://addair.co.uk/images/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://addair.co.uk/images/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • http://addair.co.uk/images/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://addair.co.uk/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://addair.co.uk/images/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://addair.co.uk/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://addair.co.uk/images/free-roblox-hair-boy_GM431946152.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_off000049b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B6 28028 bytes
SHA-256: 31510d679bc8d297c96d89fd96957b7f9b803dc564661e7d0a7167979306f48c
font_01_sfnt_off000087a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A6 18296 bytes
SHA-256: 7196709c2759277e2e42e139668fa96563a46faba9c7eb1d5fb5a9848ee95e79

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