Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e0b35a8ac88a935…

MALICIOUS

PDF

46.3 KB Created: 2021-05-13 01:06:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ccb67df49bd02ef6b96869ce7b871616 SHA-1: 9225db9bc19ad74a35f66a0324b1fe265df793ba SHA-256: 5e0b35a8ac88a935e154371bbd993017a47640a8ce11db22592fa5382a9339cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to a known malicious redirector. The embedded URL 'https://netcdn.xyz/app/406889139/free-spins-coin-master-links-twitter-game-hack' is associated with malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and heuristics indicate a malicious redirector designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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/free-spins-coin-master-links-twitter-game-hack In PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/install-coin-master_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://www.manchieu.vn/upload/editor/files/unlimited-robux-2021_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_off00004db0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DB0 25544 bytes
SHA-256: 10df47df469cb1657f9d7fa3c4b6b9a5de8122263c64857478e1a41a6d564ebc
font_01_sfnt_off000088d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D2 2884 bytes
SHA-256: f9d1f73c99ac19e1fa9dba4eb5e90eabc47451d72c930a2b8abf3a4aec2ebdc9
font_02_sfnt_off000092b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92B5 18220 bytes
SHA-256: a8042c8be0da33bfea773b5dc12ed23934315e0f49b2af9c9120623c9b8fda06

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