Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b710dd9f28bd4a3…

MALICIOUS

PDF

44.5 KB Created: 2021-05-12 05:01:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1838dd80207a4f675d541a1213161fb2 SHA-1: 2ac528a4d07bf1e192fca78f59164824881210c0 SHA-256: 7b710dd9f28bd4a3de0686a849795bbe420ffa549d2e7058cc4674ba1d84962c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that act as lures for game hacks and generators, specifically mentioning 'Coin Master'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this, indicating the document's primary purpose is to redirect users to potentially malicious content. While no scripts were explicitly extracted, the nature of the lures and embedded URLs suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/free-daily-spins-from-coin-master-game-hack PDF link annotation
    • http://www.ma-plast.hr/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/i-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/earn-free-robux-on-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_off00004758.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4758 24832 bytes
SHA-256: de20838676908e3cd96daa005eddf0cf4d31778cf0df6801e2dc7d59f4362edf
font_01_sfnt_off0000807d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807D 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00008a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A63 18568 bytes
SHA-256: 83a1403c7ea81f16df60b15bd3ed63af058033cc9f39ccf30f75695a9a8bc87e

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