Malicious PDF — malware analysis report

Static analysis result for SHA-256 f93a2d52ff45a019…

MALICIOUS

PDF

45.9 KB Created: 2021-06-13 23:02:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7ddf700977922a93c9b8af9fb961bc64 SHA-1: e18112cb4febf1d86d893d462c17dc1193c0b9fa SHA-256: f93a2d52ff45a019f8fcaf4c73ca19675f80561c043198d846bdd9c85e103d37
62 Risk Score

Malware Insights

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

The document contains multiple embedded URLs pointing to sites offering game cheats and hacks, strongly suggesting a phishing or malware distribution lure. The presence of a download button lure and callback phishing indicators further supports a malicious intent to trick users into downloading unwanted files or engaging with fraudulent schemes. No scripts were extracted, limiting further analysis of the payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/roblox-how-to-get-free-robux-youtube-2021-game-hack
    • http://sfera-express.ru/images/hack-coin-master-1_GM406889139.pdf
    • http://sfera-express.ru/images/free-attacks-on-coin-master_GM406889139.pdf
    • http://sfera-express.ru/images/how-to-install-minecraft-for-free_GM479516143.pdf
    • http://sfera-express.ru/images/free-roblox-glasses_GM431946152.pdf
    • http://sfera-express.ru/images/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://sfera-express.ru/images/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://sfera-express.ru/images/free-spin-link-for-coin-master_GM406889139.pdf
    • http://sfera-express.ru/images/coin-master-apk_GM406889139.pdf
    • http://sfera-express.ru/images/minecraft-bedrock-free-with-java_GM479516143.pdf
    • http://sfera-express.ru/images/bux-gg-robux-free_GM431946152.pdf
    • http://sfera-express.ru/images/roblox-lovenet_GM431946152.pdf
    • http://sfera-express.ru/images/minecraft-download-free-download_GM479516143.pdf
    • http://sfera-express.ru/images/roblox-free-exploits_GM431946152.pdf
    • http://sfera-express.ru/images/coin-master-free-daily-spins-link_GM406889139.pdf
    • http://sfera-express.ru/images/hacking-classes-for-roblox_GM431946152.pdf
    • http://sfera-express.ru/images/free-roblox-outfits-2021_GM431946152.pdf
    • http://sfera-express.ru/images/how-to-fly-in-roblox-without-hacks_GM431946152.pdf
    • http://sfera-express.ru/images/free-robux-no-verify_GM431946152.pdf
    • http://sfera-express.ru/images/my-robux_GM431946152.pdf
    • http://sfera-express.ru/images/coin-master-2021-free-spins-link-blogspot_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b0e.bin
a1dff41f9800743941b1fc7b6c7d274da131dd8e68fb881978948d585a4fdf29
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0E 24832 bytes
font_01_sfnt_off00008435.bin
4c3e2db5174821787a4569c9da4979555510caebd15fb9cea35573c139e242bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8435 3016 bytes
font_02_sfnt_off00008e98.bin
d9ec569cd20d7726795ec960ec3646a857017d35035d05bb5c6cd4d3e160307e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E98 18920 bytes