Malicious PDF — malware analysis report

Static analysis result for SHA-256 27ae8727652bf71b…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 01:59:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: aaa379c7781b3bfbdc75951ab81489b1 SHA-1: e2540f7a2430679b94c6e33b94f5f13064ebb786 SHA-256: 27ae8727652bf71b2084ea4e0bd91af28a5a784e1df90fe8f162c01b852900a4
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple embedded URLs and a heuristic firing for a visual download button, strongly suggesting a lure for users to download potentially unwanted or malicious applications. The document body and extracted URLs explicitly mention 'hacks' and 'free items' for games, indicating a social engineering tactic to entice users. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/coin-master-spin-hack-app-game-hack
    • http://110.232.83.89/slimsppks/repository/free-robux-app-real_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/roblox-hack-flz_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/free-robux-websites-that-actually-work_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/coin-master-free-spin-daily-link_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/coin-master-hack-spin-160-pro_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/free-hair-in-roblox-not-model_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/free-robux-giveaway-live_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/how-to-get-btools-in-roblox-2021-no-hack_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/free-minecraft-skins-girl_GM479516143.pdf
    • http://110.232.83.89/slimsppks/repository/free-robux-no-verification-at-all_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/como-hackear-coin-master-iphone_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/how-do-you-get-free-roblox_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/cool-kids-hacks-roblox_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/roblox-heroes-online_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/free-spin-app-for-coin-master_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/pokemon-go-joystick-free-download_GM1094591345.pdf
    • http://110.232.83.89/slimsppks/repository/free-robux-phone-number-verification_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdf
    • http://110.232.83.89/slimsppks/repository/coin-master-free-spins-link-today-hack_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/cm-spin-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000329b.bin
9d2dd2962cd2f0accdbe758f34ab76deab41e514918a51ea150adab6cafb08eb
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x329B 23556 bytes
font_01_sfnt_off0000679d.bin
eeaf9fe1c7e6789caefc07d53c000bb69e844de2835645c48fad05e1619410a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x679D 18180 bytes