Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d84c179b37ef05e…

MALICIOUS

PDF

38.9 KB Created: 2021-05-21 01:17:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9cfe4ea340ad544f637fdec785f80f29 SHA-1: 4953007c4f1a0f367e99ac5f363e7f6fd5a1bc21 SHA-256: 7d84c179b37ef05ec8ac3355b393d8c6ccb40ff4dbb5781b4360bab66cf4e740
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 4

  • 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.
  • 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/i-want-free-robux-game-hack PDF link annotation
    • http://www.msts.ac.th/UserFiles/File/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/rbx-earn_GM431946152.pdfIn PDF document text
    • http://www.msts.ac.th/UserFiles/File/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000301b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x301B 24836 bytes
SHA-256: f789cca2ae5c1cbd5e5277fd5bb1465c49d0644bf18c366ad03dc0a9df19fef9
font_01_sfnt_off00006903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6903 3656 bytes
SHA-256: 63a179d8a9645bea05c6d53b1776faf4e4a7281930de6cf484e639846bec2e20
font_02_sfnt_off000075bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75BC 18544 bytes
SHA-256: 21c84a9f4ed3b5496a815e3404d7d5cd07faeb2ee17584cb0226aa903f450845

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