Malicious PDF — malware analysis report

Static analysis result for SHA-256 5944f5ce2d663e88…

MALICIOUS

PDF

45.0 KB Created: 2021-05-17 01:36:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 279f5d916b11249705a56e21fd52a1bf SHA-1: 7651ffd3d1f8d8eee898bb5289006338ed242750 SHA-256: 5944f5ce2d663e888c04c61b8ef98a7049e06fd844fcd84c0cd576f6b5e58e8b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack generators, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to redirect users to potentially harmful content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/coin-master-free-daily-spins-game-hack In PDF document text
    • http://britishcomics.com/images/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://britishcomics.com/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://britishcomics.com/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://britishcomics.com/images/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://britishcomics.com/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://britishcomics.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/coinmaster_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/generator-robux_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_off00004ae2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AE2 25716 bytes
SHA-256: 34a877a5e2766f7285f055bbbc9032bc1fa84e65462513a4a06ade20ad376c9f
font_01_sfnt_off00008335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8335 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008d20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D20 18308 bytes
SHA-256: 5c3cefeee4a209382fad51155f4ab19c665f35dca270fe96ae1b58d23c3d8f95

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