Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed4a84d69f23efe…

MALICIOUS

PDF

39.1 KB Created: 2021-05-23 06:35:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c8d57c34274925f0872246bd1c1b0aef SHA-1: 309b8a32ff0f7b2828b0537728be42a2330cb694 SHA-256: 2ed4a84d69f23efe1a489abde82aad7cc552c284d3f1fa5d5690d9740b188b79
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple lures related to free in-game currency and generators, directing users to external URLs. The presence of a visual download button and callback lure heuristics, combined with the ML classifier's high confidence, suggests a malicious intent to trick users into visiting potentially harmful sites. While no scripts were explicitly extracted, the embedded URLs are the primary indicators of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/835599320/free-tiktok-comments-game-hack PDF link annotation
    • https://amatq.ca/images/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://amatq.ca/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://amatq.ca/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://amatq.ca/images/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • https://amatq.ca/images/free-spins-coin-master-hack_GM406889139.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_002_off00002cdf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CDF 27076 bytes
SHA-256: e4444182caf840ad121b230823f9883a660946be18e2d797112e0d9ebac92943
font_01_sfnt_off00006acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACB 4268 bytes
SHA-256: 9e87e7f2ee0ba3b0619f497ca59f4cf611f0ee63f63c054e2de0a38d8b99b09e
font_02_sfnt_off00007900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7900 17716 bytes
SHA-256: be925199a27c2d273bbfb828ef38ce2fcf452edcc9d534dc6164d07d4183a457

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