Malicious PDF — malware analysis report

Static analysis result for SHA-256 04cc912f43f8d65b…

MALICIOUS

PDF

48.0 KB Created: 2021-06-10 19:14:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 08175e67dcee67f22c73adb9e2f1389b SHA-1: c91faee18d6ce6ec964ded8defb5d5deb397da8a SHA-256: 04cc912f43f8d65bdd7ca374019178fde214b11623394f74cd935f52c833b4cc
162 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are structured as SEO link farms for topics like game hacks and free currency. The presence of a fake CAPTCHA heuristic indicates an attempt to trick the user into interacting with the document, likely to download a payload or visit a malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.tw/app/431946152/glasses-roblox-free-game-hack
    • https://privatearrangements.co.nz/public/files/is-pokemon-go-community-day-free_GM1094591345.pdf
    • https://privatearrangements.co.nz/public/files/minecraft-java-free-trial_GM479516143.pdf
    • https://privatearrangements.co.nz/public/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://privatearrangements.co.nz/public/files/free-spins-on-coin-master_GM406889139.pdf
    • https://privatearrangements.co.nz/public/files/free-online-minecraft-server_GM479516143.pdf
    • https://privatearrangements.co.nz/public/files/free-robux-promo-codes_GM431946152.pdf
    • https://privatearrangements.co.nz/public/files/coin-master-free-coins-2021_GM406889139.pdf
    • https://privatearrangements.co.nz/public/files/free-spin-generator-for-coin-master_GM406889139.pdf
    • https://privatearrangements.co.nz/public/files/best-free-minecraft-texture-packs_GM479516143.pdf
    • https://privatearrangements.co.nz/public/files/how-to-get-free-skins-in-minecraft_GM479516143.pdf
    • https://privatearrangements.co.nz/public/files/how-to-get-free-robux-in-2021_GM431946152.pdf
    • https://privatearrangements.co.nz/public/files/how-to-get-free-robux-website_GM431946152.pdf
    • https://privatearrangements.co.nz/public/files/how-to-get-free-robux-without-paying_GM431946152.pdf
    • https://privatearrangements.co.nz/public/files/coin-master-hack-spin-160-pro_GM406889139.pdf
    • https://privatearrangements.co.nz/public/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdf
    • https://privatearrangements.co.nz/public/files/get-coin-master-free-spin_GM406889139.pdf
    • https://privatearrangements.co.nz/public/files/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdf
    • https://privatearrangements.co.nz/public/files/how-to-get-free-minecraft-alts_GM479516143.pdf
    • https://privatearrangements.co.nz/public/files/robux-hack-free-robux_GM431946152.pdf
    • https://privatearrangements.co.nz/public/files/free-robux-master_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005399.bin
672eafd7aaf510156da9b5b24330463b0113f6a950bd1d026f389ca71ad44bb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5399 24768 bytes
font_01_sfnt_off00008c38.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C38 5696 bytes
font_02_sfnt_off00009949.bin
4dd7ad0310ac915752b02d4653390200f1ab698cada029db437a0745a584f7e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9949 18176 bytes

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