Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fb8e0b54eccfbb4…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 14:58:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: c839532e1837ee2c4ee7a548bee3c5d5 SHA-1: 0c8be715e42940556e7f4182fbe341dbff7e42fb SHA-256: 3fb8e0b54eccfbb43338da6ea17d07f6b6e83d3ace544d5e5df8baed9fbb9b9c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a malicious redirector. The document body and embedded links suggest a lure for game hacks and free generators, aiming to redirect users to potentially malicious content. No scripts were extracted, but the presence of embedded URLs and the nature of the lures indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/431946152/how-to-hack-roblox-2021-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/mc-update_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-roblox-characters_GM431946152.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_off0000512e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x512E 27828 bytes
SHA-256: f6e0e520f920d021dc18d242ba758de7eb1246fc981c3cd827f6d49a79487bc2
font_01_sfnt_off0000907f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x907F 18748 bytes
SHA-256: 82830e686af2a9787477f8716b243dfdc4e826425849e85a18f820c98dc205f5

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