Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e40143280262d23…

MALICIOUS

PDF

42.5 KB Created: 2021-05-16 05:12:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5319662ebf3f8f3cfef6822bee08be7c SHA-1: aace09d696fe50c3b1ae9d7eed23fe3af35a3362 SHA-256: 2e40143280262d237e5f32c92dc2e926eddfeff19a0a089c862b58b0aa3b8996
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency generators. The document body and heuristics indicate a lure to click these links, which is a common tactic for phishing or malware distribution. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a malicious redirector workflow.

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/hack-coin-master-android-game-game-hack In PDF document text
    • https://ethraa.ae/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/rbx-website_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-game_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-cards-free-cards_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_off00004c7f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C7F 24496 bytes
SHA-256: 3c9ee582fec6b366f3d2b39e9313cc8fd0019204e07c9357c7a5d9d81efc67e8
font_01_sfnt_off00008450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8450 18152 bytes
SHA-256: d3c9aa7dfb916c30d642dc273c5fbfa403e201a1cc6ae80255d1887c8e000a07

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