Malicious PDF — malware analysis report

Static analysis result for SHA-256 37a86ce4a4c89cdc…

MALICIOUS

PDF

36.6 KB Created: 2021-05-22 12:08:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4f1f0d9cd6124ddf162456837f448714 SHA-1: 6c392df86a67c0cd326aa1fbe0bd0017ded98a1b SHA-256: 37a86ce4a4c89cdc24c84bf0a7b346a931fd2c7725ba2513b25f99f50814fd2f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering "free game hacks" or generators, specifically mentioning Minecraft. The heuristic PDF_GAME_HACK_REDIRECT_LURE strongly indicates a social engineering tactic to trick users into clicking malicious links. While no scripts were explicitly extracted, the nature of the lures and embedded URLs suggests an attempt to redirect users to download potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/479516143/minecraft-free-install-game-hack PDF link annotation
    • http://bilhetim.com.br/images/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • http://bilhetim.com.br/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://bilhetim.com.br/images/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://bilhetim.com.br/images/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://bilhetim.com.br/images/coin-master-free-coins-and-spins-daily-summary_GM406889139.pdfIn PDF document text
    • https://playhack.in/minecraftIn PDF document text
    • https://sigmaclient.info#2In PDF document text
    • https://flux.today#3In 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_off00003684.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3684 25452 bytes
SHA-256: 813a2bfaf991538fbb906a1a365982aaf8062ecfb956875a65386203485edadd
font_01_sfnt_off00007003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7003 17644 bytes
SHA-256: 633b33bb140344f1759210963491f1aee0e41bd13e53d96deaa22883d252c2f8

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