Malicious PDF — malware analysis report

Static analysis result for SHA-256 60c55743044f7d96…

MALICIOUS

PDF

47.5 KB Created: 2021-05-19 22:30:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 06866fea95d1b2fef561db280bc7ab4c SHA-1: 66d930f0a7f5704da173140395ad1ec96d69f0f2 SHA-256: 60c55743044f7d9686a23dad550471da91e4a4160cc4ad61a83543e34a73b206
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure for 'free Robux codes' and game hacks, indicating a social engineering attempt to redirect users to malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/free-robux-codes-2021-game-hack PDF link annotation
    • https://pneukalousek.cz/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/toolbox-apk_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://pneukalousek.cz/images/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • https://pneukalousek.cz/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://pneukalousek.cz/images/hacks-para-roblox_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_003_off00004953.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4953 26964 bytes
SHA-256: fe3667ad1ea9d5678adc35b7ba0e9774b24e369cdb7a9e19dcc2d541278f72ff
font_01_sfnt_off00008912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8912 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9624 18588 bytes
SHA-256: 0c0011b59677f21f59199ad7d2a82948105ed154610022cedcbab6f052c91d55

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