Malicious PDF — malware analysis report

Static analysis result for SHA-256 416f2b46ffd39c60…

MALICIOUS

PDF

47.3 KB Created: 2021-05-15 02:01:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 617b8073e0b40ec51eb69f40991ff8eb SHA-1: 59fe1c15b52650f048f5fe50f0262d2329f56e4a SHA-256: 416f2b46ffd39c60fcf11646512e31e6206a4d501758593c5010a21635ff3136
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs pointing to sites offering game hacks and free resources, strongly suggesting a lure for users to download malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the document's theme indicate an attempt to trick users into downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-drop-master-free-game-hack PDF link annotation
    • http://thomas-hartl.at/images/robux-game_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/roblox40com-robux_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://thomas-hartl.at/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://thomas-hartl.at/images/how-to-hack-a-roblox-account-easy_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_off00004c02.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C02 29352 bytes
SHA-256: 6d473d83c1787be6606ce2ff8936174e92fefa1f06ca223ecf84b2ba49051fdc
font_01_sfnt_off00008c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6C 18056 bytes
SHA-256: 11f18688a2b2da9a5c9f112f1650d1ea79688667bc5daef8815cb9676fc0e265
font_02_sfnt_off0000adb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADB0 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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