Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fae9e1372085645…

MALICIOUS

PDF

44.4 KB Created: 2021-05-13 06:43:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f95fb3b832313a8e4cd8a43dae3bfe4c SHA-1: 0aff032ae869b765ba58e5a27d167aa39762f290 SHA-256: 1fae9e1372085645b9adb049407c13ce32baa2f1e516977962968c1673e90723
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are disguised as game-related downloads or hacks, indicating a link farm designed to lure users to malicious sites. The presence of a direct download URL and the ML classifier's high confidence score further support its malicious nature. No scripts were extracted, but the document structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • 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.
  • 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.xyz/app/479516143/wurst-mc-game-hack
    • http://sudamericarural.org/images/como-hackear-coin-master_GM406889139.pdf
    • http://sudamericarural.org/images/free-robux-real-2021_GM431946152.pdf
    • http://sudamericarural.org/images/roblox-free-robux-no-human-verification_GM431946152.pdf
    • http://sudamericarural.org/images/coin-master-hack-xyz-download-free_GM406889139.pdf
    • http://sudamericarural.org/images/minecraft-games-online-free-no-download_GM479516143.pdf
    • http://sudamericarural.org/images/free-coin-master-spins-link_GM406889139.pdf
    • http://sudamericarural.org/images/coin-master-mod-apk-free-download_GM406889139.pdf
    • http://sudamericarural.org/images/today-free-spin-coin-master_GM406889139.pdf
    • http://sudamericarural.org/images/coin-master-attack-madness-hack_GM406889139.pdf
    • http://sudamericarural.org/images/free-robux-hack-generator_GM431946152.pdf
    • http://sudamericarural.org/images/free-robux-just-click_GM431946152.pdf
    • http://sudamericarural.org/images/free-robux-group-payouts_GM431946152.pdf
    • http://sudamericarural.org/images/coin-master-free-spins-link-facebook-page_GM406889139.pdf
    • http://sudamericarural.org/images/coin-master-free-coins-and-spins-hack_GM406889139.pdf
    • http://sudamericarural.org/images/roblox-prison-life-hack_GM431946152.pdf
    • http://sudamericarural.org/images/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • http://sudamericarural.org/images/blox-world-free-robux_GM431946152.pdf
    • http://sudamericarural.org/images/coin-master-free-spins-and-coins-daily_GM406889139.pdf
    • http://sudamericarural.org/images/free-robux-with-no-survey_GM431946152.pdf
    • http://sudamericarural.org/images/minecraft-auto-miner-hack_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004883.bin
6d326d138380fd34def306604557c3ac6086df7e948c29781edbd5af63197a2b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4883 26856 bytes
font_01_sfnt_off00008351.bin
89ec581cebd0e90262805b5db309de4686eceb75a25d429085148d13353d0453
pdf-font-stream PDF embedded font (sfnt) at offset 0x8351 2860 bytes
font_02_sfnt_off00008d29.bin
42208ca16144cf3638b4e14489635fc98426cb09ec794bff84aa9a2d6a3db890
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D29 17556 bytes