Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c1cdfaa7f64822d…

MALICIOUS

PDF

43.1 KB Created: 2021-04-24 12:13:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e4c6805889897fd8beca60ba8cb85051 SHA-1: 64c39e6fe6e120c52693e82e0cee80a7514a2415 SHA-256: 7c1cdfaa7f64822d8a4e3c8c4722f28033ffc2539526495903f65667800c202b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and explicit lures related to game hacks and generators, specifically for Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this, indicating a high likelihood of redirection to malicious sites. While no scripts were directly extracted, the document body and embedded URLs suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9836

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/431946152/roblox-prison-life-v2-0-hack-exploit-game-hack PDF link annotation
    • http://sudamericarural.org/images/roblox-hack-download-robux-2021.pdfIn PDF document text
    • http://sudamericarural.org/images/innovation-hack-roblox.pdfIn PDF document text
    • http://sudamericarural.org/images/https-web-roblox-free-robux.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-cheats-for-robux-android.pdfIn PDF document text
    • http://sudamericarural.org/images/how-to-hack-into-the-big-brother-house-roblox.pdfIn PDF document text
    • http://sudamericarural.org/images/how-to-get-free-robux-lohith-gaming.pdfIn PDF document text
    • http://sudamericarural.org/images/my-roblox-girlfriend-cheated-on-me.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-jailbreak-free-vip-server-link-new.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-glitch-acsesoir-free.pdfIn PDF document text
    • http://sudamericarural.org/images/ultimate-driving-delancy-gorge-roblox-money-hack.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000041a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41A5 24384 bytes
SHA-256: f83800878efb99af68d88350912b97e5e4491e9e9a6e07a6b50467a05ee8beed
font_01_sfnt_off000079ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79BA 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off0000836b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x836B 19164 bytes
SHA-256: 9f067aa05ee472e9fb4e400cdd698fe26a314cbddbd082cf05f87d5a0a4945a5

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