Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb549f5b61b17b51…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 13:42:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a0c3e7803ee18ba25e6922b5ff61d5a2 SHA-1: 3cee2494c00b8b35b694322b78979eedaccc101d SHA-256: bb549f5b61b17b51f2a32a5b1fe1d13de5821eca92939723ba2a08336fdfc6c3
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 generator / game hack' lures. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF's structure and embedded links are indicative of a social engineering attack.

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.co/app/431946152/how-to-get-free-robux-easy-and-real-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/near-tiktok-free-view_GM835599320.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-hack-mac_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-generator_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/blox-rewards_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-obc-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robux-hack-paste_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/5-roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/console-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-many-free-spin-links-is-there-for-coin-master_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_off00002fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBC 22624 bytes
SHA-256: 79c7938268a3a4be200160743aa9a58a04158974e9319a3991180e4c11e2c6c5
font_01_sfnt_off00006262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6262 19412 bytes
SHA-256: e515b27ed44a1bb81ccde538143d98cf5a205a26f57ebe02a88a1e11d502c2ca

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