Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d9ddaefbf28c1b4…

MALICIOUS

PDF

49.9 KB Created: 2021-06-11 05:41:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1fb67f9b2d356c99fe14c910447921fd SHA-1: db887daefc7401db75b560bea3c63b67b2ee8392 SHA-256: 5d9ddaefbf28c1b48c6cc8b8691f1c667aa45d3dfcf922ebe23cf159bda0e127
62 Risk Score

Malware Insights

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

The document contains multiple embedded URLs advertising game hacks and exploits, suggesting a lure for users to download potentially malicious files. The presence of a callback lure further indicates a phishing or tech-support scam attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/how-to-do-hacks-with-admin-roblox-game-hack
    • http://www.homesweethome.pl/images/gamehunters-coin-master_GM406889139.pdf
    • http://www.homesweethome.pl/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://www.homesweethome.pl/images/minecraft-mac-free_GM479516143.pdf
    • http://www.homesweethome.pl/images/coin-master-free-spin-codes_GM406889139.pdf
    • http://www.homesweethome.pl/images/tiktok-free-website_GM835599320.pdf
    • http://www.homesweethome.pl/images/www-roblox-com-robux-free_GM431946152.pdf
    • http://www.homesweethome.pl/images/apps-for-free-robux_GM431946152.pdf
    • http://www.homesweethome.pl/images/how-do-you-get-minecraft-for-free_GM479516143.pdf
    • http://www.homesweethome.pl/images/how-to-get-free-robux-without-installing-any-apps_GM431946152.pdf
    • http://www.homesweethome.pl/images/coin-master-hack-online-without-human-verification_GM406889139.pdf
    • http://www.homesweethome.pl/images/real-robux-generator-2021_GM431946152.pdf
    • http://www.homesweethome.pl/images/coin-master-free-spin-ml_GM406889139.pdf
    • http://www.homesweethome.pl/images/free-spins-coin-master-ios-2021_GM406889139.pdf
    • http://www.homesweethome.pl/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • http://www.homesweethome.pl/images/minecraft-free-download-mac-full-version_GM479516143.pdf
    • http://www.homesweethome.pl/images/coin-master-links-that-don-t-expire_GM406889139.pdf
    • http://www.homesweethome.pl/images/free-spin-coin-master-game_GM406889139.pdf
    • http://www.homesweethome.pl/images/free-robux-rewards_GM431946152.pdf
    • http://www.homesweethome.pl/images/how-to-get-free-roblox_GM431946152.pdf
    • http://www.homesweethome.pl/images/roblox-money-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005067.bin
d533df9e522f034321dfb4f4977ea3ac53bebcccdd8a7fbad312e157a36e308c
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5067 28940 bytes
font_01_sfnt_off000092b2.bin
c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x92B2 2892 bytes
font_02_sfnt_off00009c9b.bin
6c800ca8972a6e4d16c549dbbd52fc9fe2013c06b82bdca0d2de2c01f550419e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C9B 19536 bytes