Malicious PDF — malware analysis report

Static analysis result for SHA-256 656dd66427cfc123…

MALICIOUS

PDF

34.3 KB Created: 2021-07-06 07:37:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7c3aa53ff4d532c204b7cd8143895a82 SHA-1: 30ca3610aa04c966a5c74a4906f6ebb6cb416284 SHA-256: 656dd66427cfc123d1a2468814a72318ba6b30c5a9b0e6cba8f0b1c5784ee840
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a known malicious redirector infrastructure, specifically advertising 'coin master connection lost hack game hack'. The document body and heuristics confirm the lure is related to game hacks and free currency, aiming to trick users into visiting the malicious URL. No scripts were extracted, but the primary attack vector is the malicious link.

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 http://netcdn.tw/app/406889139/coin-master-connection-lost-hack-game-hack In PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/hacks-for-unlimited-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/roblox-how-to-get-free-packages_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-gojirasaurus-free-ancient-earth-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-easy-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-hack-in-roblox-jailbreak-2021-mobile_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/hacker-roblox-female_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/cch-ly-robux-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/does-free-giveaway-game-actually-gives-you-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ftunismabekasi.ac.id/repository/download-a-free-generator-for-robux-no-website_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31BB 22616 bytes
SHA-256: 964e8bffb331847f8216eb470873ccfe62268af898aff2f68c9e4b006894875f
font_01_sfnt_off0000641a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641A 18004 bytes
SHA-256: 58988067efd886dc36456b46fe3225c93ea55016c7ce0119dda3afc1f388b935

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