Malicious PDF — malware analysis report

Static analysis result for SHA-256 94d55e6974b734aa…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 12:59:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 08fe759298901d415d9df6491260ef01 SHA-1: 7870aae4eeca4a9b2f04ac06e3e685d5dcc15962 SHA-256: 94d55e6974b734aa1c93b8f26fa44d8c4e15ee4a849d26adcd55a4d2436b9a84
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary redirect URL is https://netcdn.online/app/479516143/play-minecraft-for-free-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/play-minecraft-for-free-game-hack In PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-gang_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-free-apk-download-016-0_GM479516143.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_off00005237.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5237 24416 bytes
SHA-256: f2f16525a5b79e0279885d63b9ae3bb05a1ab46b6428182e26f70270bac00f7e
font_01_sfnt_off00008a5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5D 18116 bytes
SHA-256: 58506b39f0592aa293a22e76cdd5d8324130a94bf097dc81d26ff216ea8060f4

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