Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6165343567b4d4e…

MALICIOUS

PDF

44.4 KB Created: 2021-06-03 17:15:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ce9e986f3d387e05eb576e7d748c1b7d SHA-1: 04c4f6a41a28c8a565cd22ece4d7043a802c1551 SHA-256: a6165343567b4d4e3e8f1fb24c055c0150bb5a233977d8843886392004d42c29
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks'. The primary malicious URL identified is https://netcdn.online/app/406889139/haktuts-coin-master-free-spins-2021-game-hack. While no scripts were extracted, the PDF structure and embedded links strongly indicate a social engineering lure designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/haktuts-coin-master-free-spins-2021-game-hack In PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/collect-robux_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-free-master_GM406889139.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-script_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/robux-withdraw_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/how-to-hack-coin-master-apkmody_GM406889139.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_off00005136.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5136 24732 bytes
SHA-256: 658e1dfba3c638512545e56921e2338906da882ee2a039be15b3b7866c9d8370
font_01_sfnt_off000089e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E9 18600 bytes
SHA-256: 498ee718860c630345672f8235593d907a03177fbe364768152bf347f44b8d5c

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