Malicious PDF — malware analysis report

Static analysis result for SHA-256 add2e07f5fe0f1c0…

MALICIOUS

PDF

43.8 KB Created: 2021-05-18 00:04:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 051fe3089e2aa35b1abc0b6af3eacf74 SHA-1: 140df426f6d5ed806984d66ee8188eb6e34977df SHA-256: add2e07f5fe0f1c0b895742b7e5a87ae7f22581f20214c19179db28fab8d4ec5
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded URLs and a call-to-action lure related to obtaining free game currency, which is a common phishing tactic. The ML classifier strongly flagged this PDF as malicious, indicating it likely serves as a dropper or redirects to a malicious site. No scripts were extracted, but the presence of external URIs and the ML detection suggest a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/free-robux-no-verification-2021-game-hack PDF link annotation
    • http://www.viniperfetti.com/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.viniperfetti.com/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.viniperfetti.com/images/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.viniperfetti.com/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.viniperfetti.com/images/coin-master-daily-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://www.viniperfetti.com/images/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • http://www.viniperfetti.com/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://www.viniperfetti.com/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.viniperfetti.com/images/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://www.viniperfetti.com/images/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://www.viniperfetti.com/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.viniperfetti.com/images/cone-master_GM406889139.pdfIn PDF document text
    • http://www.viniperfetti.com/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://www.viniperfetti.com/images/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://www.viniperfetti.com/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.viniperfetti.com/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.viniperfetti.com/images/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://www.viniperfetti.com/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://www.viniperfetti.com/images/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://www.viniperfetti.com/images/can-you-give-me-robux_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
stream_003_off000049bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49BB 26636 bytes
SHA-256: 44237a0578abb38fa918dba754b71c612fc1c95f27d86b482f0fda2fa6f26bc1
font_01_sfnt_off00008697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8697 19004 bytes
SHA-256: d712ae43aec968503a6d4b8ef93db90b07e4d7d9799b66e9787cf09d99ae12e2

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