Malicious PDF — malware analysis report

Static analysis result for SHA-256 710f9f9856d15c02…

MALICIOUS

PDF

34.9 KB Created: 2021-07-09 14:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d809eb8c311ba138d449327856c906c4 SHA-1: bbd7473a20dd54db5872be598e6dc3ac6a93257d SHA-256: 710f9f9856d15c02363fa1b4d134b65db4f1533e32b8051fe7b2939e0acb7765
62 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, including one pointing to 'netcdn.tw/app/406889139/master-coins-free-game-hack', which is indicative of a phishing or malware distribution attempt. The document body and heuristics suggest a lure related to free game currency or hacks, aiming to trick users into downloading a payload. The ML classifier strongly flagged this PDF as malicious.

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.tw/app/406889139/master-coins-free-game-hack PDF link annotation
    • http://www.sovtigaz.ru/f/files/free-robux-images_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/roblox-free-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/wizard-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-free-spin-app-iphone_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/give-me-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-to-hack-roblox-high-school-2021_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/roblox-heroes-online-free-access_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/pointsprizes-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/cheat-code-sight-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.sovtigaz.ru/f/files/how-do-i-get-robux-for-free-on-roblox_GM431946152.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
stream_002_off000033ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33EA 22652 bytes
SHA-256: d14f53ac07f91b962f5575583cecf779f9f8fcd3079069c248b19c911482da57
font_01_sfnt_off00006681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6681 17996 bytes
SHA-256: fa851caa7f63d89d5125b361ad8af841500573ce2358cce74b5d769b3240620f

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