Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd67a0c6a469e3b…

MALICIOUS

PDF

39.2 KB Created: 2021-05-21 05:42:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 140286c0841fd7781dde136ce979dcd4 SHA-1: aa0541973b1f90ad4617e4fac8e974bbc8f0ada5 SHA-256: fbd67a0c6a469e3ba262804ed718e05138a013923c918f9f42636e11c2d2b3d0
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/roblox-redeem-codes-free-game-hack PDF link annotation
    • https://www.ncscolour.no/images/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.ncscolour.no/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://www.ncscolour.no/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://www.ncscolour.no/images/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • https://www.ncscolour.no/images/free-private-minecraft-server_GM479516143.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
font_00_sfnt_off00003216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3216 26064 bytes
SHA-256: bc4ee730a4fba1ab4f5f9e365099a7b6751d96c5d10424b15698f5e50072b8ff
font_01_sfnt_off00006c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4B 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00007774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7774 18380 bytes
SHA-256: 20d0b662fcfcdd1cfb8c839e912a5e46386cbbaa083776d069a590b1aaf94574

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