Malicious PDF — malware analysis report

Static analysis result for SHA-256 f459bd947928b6f5…

MALICIOUS

PDF

35.7 KB Created: 2021-05-21 00:47:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5c0c18878294bf81e4ee2aaf30ad1ff7 SHA-1: 1168f91526b2ed2adc5179a1ade6017c8fab3672 SHA-256: f459bd947928b6f5c904f30e839c47770508f0786d6e5b5876a816a443c31978
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 0.9648

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/835599320/free-tiktok-views-no-verification-game-hack PDF link annotation
    • http://vibrato.fr/images/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://vibrato.fr/images/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://vibrato.fr/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://vibrato.fr/images/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • http://vibrato.fr/images/minecraft-bedrock-edition-pc-free_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003009.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3009 26516 bytes
SHA-256: 6ea718e1531e7298c81218349e8fe1e56b40c9992fad6fb1bb3bbb2caf4ea714
font_01_sfnt_off00006b1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1B 17984 bytes
SHA-256: 9795b21d017140d10c0b41d7b2b96a83a6c965cfa279b8aa3b98cbcfef695b0e

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