Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a37815159970fa4…

MALICIOUS

PDF

41.8 KB Created: 2021-05-14 12:22:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d25739756958b1032c119a599fc780b2 SHA-1: 6cd2f0a8e01abdd1f1620c451ed2aecd2f9b0dfb SHA-256: 2a37815159970fa43cb567021f206fa43df0dd0ebd3ff5be23bb529aef53da7d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising "game hacks" and "free generators" for popular games. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-heaven-links-game-hack, which is flagged as a malicious redirector. The document body, though partially obfuscated, also contains this URL and other links to similar content, suggesting a social engineering attempt to drive traffic to potentially malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/coin-master-heaven-links-game-hack In PDF document text
    • https://www.europap.cz/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://www.europap.cz/images/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.europap.cz/images/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/minecraft-wurst_GM479516143.pdfIn PDF document text
    • https://www.europap.cz/images/roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/login-robux_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.europap.cz/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.europap.cz/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • https://www.europap.cz/images/roblox-free-executor_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_off00004928.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4928 24892 bytes
SHA-256: 38cca9bc5e73894d121c91c6933765766b1dfc820ebe3585eeda13bbdba71d60
font_01_sfnt_off0000822f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822F 17828 bytes
SHA-256: 86bc3ccbb1f0b7eb9d1186ac4a23e04190280488fc5550aa3b02c029ce2559b9

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