Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ec500c0e09ff444…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 13:55:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9ff8d3019340fc268406d564cdf89fb1 SHA-1: c842d15355f5409e6986926b1400d0c88f0e2497 SHA-256: 1ec500c0e09ff444dbebcf3017e6477b1b0f44473100fcf3e35dcdb8cf9ea1b1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a social engineering attempt to trick users into visiting potentially harmful sites. The primary lure is for 'Coin Master Hacks Free Spins', directing users to http://netcdn.tw/app/406889139/coin-master-hacks-free-spins-game-hack. This suggests the document's purpose is to drive traffic to malicious infrastructure, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hacks-free-spins-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/hack-para-apocalypse-rising-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-password-and-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacks-on-robloxs_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacks-for-blood-flow-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-ohne-handynummer_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-maps-download_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacks-para-roblox-aimbot-en-strucid_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/horizon-in-roblox-money-hack-may-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-working-strucid-aimbot-hack-2021-august-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-use-hacks-on-noteioty-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/overhaul-roblox-free-shop_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-hack-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-hack-v3rmillion_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_002_off0000314a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x314A 22728 bytes
SHA-256: 4f0910c0e3e2d8a73b8d192e64493fb40c50b257c8058a5d45ede5767fef9e6b
font_01_sfnt_off0000644b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644B 18344 bytes
SHA-256: 947667c85d24b0d3a8de245f111eeade861a88a333665e7462fd4878b305e25b

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