Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14a426233c202c5…

MALICIOUS

PDF

44.9 KB Created: 2021-05-15 15:02:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e7c652d1d08198890ab9535ffcec15c0 SHA-1: 7b24c40f84378174a1fcd8b909264c36326178a4 SHA-256: c14a426233c202c5c8ce9b2f650ad2709127b4487557089fb5516fa1cbb8e316
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures for games like Coin Master and Roblox. The document body and embedded URLs are consistent with a phishing or scam campaign designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/coin-master-daily-spin-free-game-hack In PDF document text
    • https://marielyst-grundejerforening.dk/images/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/free-robux-working_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/100-robux_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://marielyst-grundejerforening.dk/images/coin-master-100-spin_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
stream_003_off00004aaf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAF 31376 bytes
SHA-256: aa8052153c061d444563cf64932b0f79ece8d5619ed938e293e58bf80fdb1b17
font_01_sfnt_off00008d40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D40 18308 bytes
SHA-256: 213ea0fed5678e19eff32fcc5d46e69a4f1b73f67043b57a178cf12547108d4a

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