Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bef8af0d1b4015f…

MALICIOUS

PDF

42.0 KB Created: 2021-05-16 02:32:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a9c5463371e6a826166776ac27c2abc2 SHA-1: bbec6134e1610a73cd64444d09d3f6e1c1f0311c SHA-256: 0bef8af0d1b4015fa797276893a9dcc7bd40d8077c35ef5d8ec431aea70fa515
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary redirector URL is https://netcdn.xyz/app/406889139/how-can-i-get-free-coinsn-coin-master-game-hack, which likely leads to a payload download or further phishing content. The document body and embedded URLs reinforce this lure, aiming to trick users into clicking through to malicious sites.

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/how-can-i-get-free-coinsn-coin-master-game-hack In PDF document text
    • http://www.maakherumusic.net/images/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/robux-offer-wall_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://www.maakherumusic.net/images/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/get-robux-now_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://www.maakherumusic.net/images/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-heaven-free-spins-today_GM406889139.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_off00004afa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFA 25352 bytes
SHA-256: 6c4cea56145f6e459f149dd8d16dc716e55491a79b50fe130acf7cfe78089290
font_01_sfnt_off0000831d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831D 17872 bytes
SHA-256: 7acb2ea7ca48292ff84e38b925b00f57c40a05e644be1ec1a4eb48c7cb3542c1

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