Malicious PDF — malware analysis report

Static analysis result for SHA-256 e492b18dc4ffebca…

MALICIOUS

PDF

47.1 KB Created: 2021-06-09 09:14:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fd23db985ba5ea74c5360294c9fb9bb3 SHA-1: 3aa6d6ef954f91468ae3b407f1b8db64f805836d SHA-256: e492b18dc4ffebcac325d59043dcd2a6c8b5c5c06572a900816e8b11c55fc9ed
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure directs users to 'hacks-para-roblox-2021-jailbreak-mayo-game-hack', which is a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/hacks-para-roblox-2021-jailbreak-mayo-game-hack In PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/pubg-uc-earning-app-in-pakistan_GM1330123889.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-to-get-free-robux-games_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_004_off00005460.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5460 27496 bytes
SHA-256: 93636c5fe89ba2fd713d196af3d6b531de8705ae16354fec55b030601dbe1f4e
font_01_sfnt_off00009220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9220 19400 bytes
SHA-256: 0d5a6c8c6403ff15807376d28317f6219551cfd050faafc992711842ced63fe2

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