Malicious PDF — malware analysis report

Static analysis result for SHA-256 59438022f5a713d8…

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 14:10:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 72fdebb292c55770643ade27452259c2 SHA-1: 9c1f00fe8930d17a431850ac1f88ab5cae0a4943 SHA-256: 59438022f5a713d85dd5308666a76d47f4c94684620e292b481df844799ca776
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF document contains a lure related to 'free Robux' and game hacks, directing users to external URLs. The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to a site that may host further malicious content or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/how-to-get-free-robux-easy-no-download-game-hack PDF link annotation
    • http://oca.undil.tl/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • http://oca.undil.tl/repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://oca.undil.tl/repository/roblox-tix-generator_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52AC 26060 bytes
SHA-256: d7e2dd2af91a63d7270f43e8e48cbb9350275dfd0ebfe7bd2840f6212eab76c7
font_01_sfnt_off00008de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE2 19108 bytes
SHA-256: 7bc61c49a0b734df4d56b9cb8c894117daf111bfa68c773dcc76edca8f070452

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