Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a0d8c4a0e391a5b…

MALICIOUS

PDF

46.6 KB Created: 2021-06-07 18:57:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e0d815d43e3efa1318c14f545a89c25c SHA-1: 9318f147b89398d6c48caca44b3d7ae0e687c5cd SHA-256: 7a0d8c4a0e391a5b4566fb6ecfeeb373396fdbb67ab5e89744f66f8615f4bbe2
62 Risk Score

Malware Insights

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

The PDF contains a lure for game hacks and includes a prominent external URI pointing to a file download. The presence of a visual download button and the ML classifier's high confidence score further support a malicious intent. While no scripts were extracted, the document's structure and embedded URLs suggest it's designed to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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.tw/app/431946152/roblox-how-to-get-free-lvl-7-hack-game-hack PDF link annotation
    • http://eurosystemssrl.it/images/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • http://eurosystemssrl.it/images/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://eurosystemssrl.it/images/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://eurosystemssrl.it/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://eurosystemssrl.it/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://wolfzscriptsIn 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_004_off00004f7c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F7C 25436 bytes
SHA-256: e5a0b5a3146711acc6881a0165915c568186d1b62d0db63c355d615e5f13b469
font_01_sfnt_off000087e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E0 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00009190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9190 18784 bytes
SHA-256: ed1681584823797ce714a8598cd657d131d2705f53e0844d6941d510fdc26f52

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