Malicious PDF — malware analysis report

Static analysis result for SHA-256 39f6f97beaa6855b…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 08:53:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c31b1ac5ebc8188739f8b784ca6e9c86 SHA-1: 1feb70413f32402e57526d0256ef86c11315f71e SHA-256: 39f6f97beaa6855b6a3a049738823b59fdce227d13cf6b58a0e5a849eab695fa
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a call-to-action phrase, strongly suggesting a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence. The document's content and embedded links point towards a lure for free in-game currency or premium access, likely leading to a malicious download or exploit. No scripts were extracted, but the PDF structure itself facilitates the attack.

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/431946152/how-to-get-free-roblox-premium-game-hack
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-online-no-human-verification_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/robux-hack-2021-free_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-spain_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/codigos-hacker-de-roblox_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/btools-hack-roblox-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/can-pokemon-go-free-account-2021_GM1094591345.pdf
    • http://111.68.26.74/widyapustaka/repository/apps-to-get-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-xray-hack-download_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-you-get-free-robux_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-robux-on-ipad_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-hack-kick-gui-juin-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-robux-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/how-to-equip-the-free-item-in-roblox-deathrun_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-free-robux-codes_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-codes-no-human-verification-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-robux-for-samsung_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/freespincoin-masterlinkdownload_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-spins-link-app-download_GM406889139.pdf
    • http://111.68.26.74/widyapustaka/repository/roblox-vehicle-simulator-free-vip-server-link-2021_GM431946152.pdf
    • http://111.68.26.74/widyapustaka/repository/free-script-hub-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000308f.bin
682186635bd13c90aec5728ca855cb1732ee7f0cfa83238ab9691117e840486b
pdf-font-stream PDF embedded font (sfnt) at offset 0x308F 22852 bytes
font_01_sfnt_off000063a5.bin
8b1b51e6228fdc9650fa24152b1b7f272427408116855cfdbd7c3d0194f83bbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A5 19592 bytes