Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f339e63b953598…

MALICIOUS

PDF

41.4 KB Created: 2021-05-11 02:17:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: fe7f12041df65c690a4c84b6d2bf5887 SHA-1: 491326a3969a9eb8a865370e157b4c75683cf255 SHA-256: a4f339e63b9535984ed82456e4e7de273bba329feacd0abc0fae03385ecd5393
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'hacks' for popular games. The primary redirect URL is https://netcdn.xyz/app/406889139/free-spin-generator-for-coin-master-game-hack. The document body and embedded URLs suggest a lure for users seeking in-game advantages, which is a common social engineering tactic. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/406889139/free-spin-generator-for-coin-master-game-hack In PDF document text
    • http://www.fanciullovito.it/images/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://www.fanciullovito.it/images/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://www.fanciullovito.it/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.fanciullovito.it/images/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.fanciullovito.it/images/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49EE 24564 bytes
SHA-256: 79d8898532ff096adae47a2d7dd8c1584aa10f1a2b26d3d3261763997593920e
font_01_sfnt_off000080c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C6 17884 bytes
SHA-256: 875ea20670cc53df10756da7fc56e77b8f1dde7185e9259fbb8a92495bb142d9

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