Malicious PDF — malware analysis report

Static analysis result for SHA-256 54f7d1135b30b0ad…

MALICIOUS

PDF

33.5 KB Created: 2021-06-23 11:34:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 99ec874aa67346b775a4b40428b0c5ba SHA-1: d747c76fd0d4d4e38e90550aa2aba71ff6bfc5f3 SHA-256: 54f7d1135b30b0ad766e115f1fafc9eca243864840983c6b85eec24867c61930
62 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a prominent external URI pointing to a download site, disguised as a way to get free in-game currency. The ML classifier strongly flagged this PDF as malicious, and the presence of download lures and callback lures reinforces the malicious intent. The document likely serves as a lure to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/free-robux-real-working-game-hack PDF link annotation
    • https://goodtools.tw/upload/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-hack-on-roblox-no-email-or-no-password_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-someone-in-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/jd-roblox-free-knife-code_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-install-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-free-box_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-roblox-rust-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/booga-booga-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC9 21932 bytes
SHA-256: 10b7245830f67e57bc09daa1f5c9b3ac099a7273ec0fd172ac253d3751bb0790
font_01_sfnt_off00005d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3A 19280 bytes
SHA-256: 9945ffa193253d154cbce2906461b0c2a302f27e13cc5dbaefc5af262476b8d2

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