Malicious PDF — malware analysis report

Static analysis result for SHA-256 94b4990596f32d66…

MALICIOUS

PDF

45.5 KB Created: 2021-05-18 02:02:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 65461d500d8594ef6d6a96455aedaff1 SHA-1: 6cf439a5d06e4acec8942170bdba655f80347893 SHA-256: 94b4990596f32d66743b2b83b7231dcd9ed3f5148df5f832454adfb1f55cfaba
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a primary external URI pointing to game hack download sites. The ML classifier strongly flagged this PDF as malicious, and the presence of download lures and callback phishing elements further supports a malicious intent. The document likely serves as a lure to trick users into downloading malware disguised as game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-hack-apk-3.5-18-game-hack PDF link annotation
    • http://moskewicz.com/images/app-master_GM406889139.pdfIn PDF document text
    • http://moskewicz.com/images/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://moskewicz.com/images/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://moskewicz.com/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://moskewicz.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://moskewicz.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://moskewicz.com/images/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://moskewicz.com/images/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://moskewicz.com/images/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://moskewicz.com/images/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • http://moskewicz.com/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://moskewicz.com/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://moskewicz.com/images/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://moskewicz.com/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://moskewicz.com/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://moskewicz.com/images/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://moskewicz.com/images/freerobux-co_GM431946152.pdfIn PDF document text
    • http://moskewicz.com/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://moskewicz.com/images/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://moskewicz.com/images/roblox-play-now-for-free_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_off00004987.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4987 25348 bytes
SHA-256: 464c02e675267be15e0989a34de97b19e737a27162cf152b628bf5ef92c6a048
font_01_sfnt_off00008416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8416 2944 bytes
SHA-256: fcfcd28869b8d6c7503d63ed8d48371ec5b580fea2733193e2acbb82b3d30a76
font_02_sfnt_off00008e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E40 18584 bytes
SHA-256: 713a301d70f86388f4bd8aea956833d7b06d6a967d700e365eefcc159a0c525c

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