Malicious PDF — malware analysis report

Static analysis result for SHA-256 a06b25debcf3ce9f…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 17:49:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fc40b31ec6c1d3445041373b93c448ae SHA-1: e1ed7a4033bc34758ff29a5289ebdcc7f590fcf7 SHA-256: a06b25debcf3ce9fb9364e6459a0c33a59274824da2cf8273a68a9355027fd3e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appear to be game-related hacks or generators. One primary URL, http://netcdn.tw/app/406889139/coin-master-free-attack-link-game-hack, is identified as a malicious redirector. The document's structure and embedded links suggest a phishing or scam attempt, likely leading to further malware downloads 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-free-attack-link-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-gui-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-high-school-life-free-steff_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-admin-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-one-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/cuenta-de-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-roblox-to-get-free-builders-club_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/freerobu-in-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/get-free-robux-robloxcom_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/jailbailer-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-free-download-linux_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-code-robux-2021-auguste_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-groups-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-4now-info-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-roblox-hax_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/money-cheats-for-roblox-rocitizens_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_off000034e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34E1 22900 bytes
SHA-256: 15c4a7e6af45281074ce70ca1532961f857329e69bb5faefd343b6e1263ee9d8
font_01_sfnt_off00006858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6858 18168 bytes
SHA-256: 75c6e626bf291d9515ad923a84f4b1e9b9d7c6cab114e50afbb6b6b9866eb8df

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