Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf39f48ce4a1dea3…

MALICIOUS

PDF

35.8 KB Created: 2021-07-19 19:15:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 15584b0f68def7f62890b89003bd9a0e SHA-1: 6ab55367c4010c9f1c35f9f48933bf62a9f2faa0 SHA-256: bf39f48ce4a1dea3fb83e27916d1fd1ccf2dc709fb070950dab0098e236f44f1
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a prominent call-to-action to access a 'Robux Generator', strongly suggesting 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 lure of free in-game currency are common tactics for distributing malware or conducting scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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 http://netcdn.tw/app/431946152/free-roblox-accounts-with-robux-that-work-2021-game-hack PDF link annotation
    • https://cogp.greentrade.org.tw/image/data/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://cogp.greentrade.org.tw/image/data/files/how-to-hack-someones-account-on-roblox_GM431946152.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
font_00_sfnt_off000032da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32DA 22836 bytes
SHA-256: e06dabe3df8d37e31e9618dd7f74affcf3391c4cded37afb315398cc07c19723
font_01_sfnt_off00006620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6620 19664 bytes
SHA-256: 8bae07e728b427e96174baf89e971ad8e2c74617409806078ebf0a16f21879c4

Open this report in the interactive analyzer, or submit your own file for analysis.