Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4a04630a195c7dc…

MALICIOUS

PDF

35.3 KB Created: 2021-06-26 02:48:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 55db061c533284ce3edf91740ed26d87 SHA-1: d853aacc35426b904766ba1dc6993a8d4dc15011 SHA-256: a4a04630a195c7dce32916a097271b988478234191703a9da40ac02dd5c11fed
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and text that promote 'free Robux' and 'game hacks', directly linking to a known malicious redirector. This indicates a social engineering lure designed to entice users to click through to potentially malicious content. No scripts were extracted, but the document structure and embedded URLs strongly suggest a phishing or scam attempt.

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-hack-free-robux-on-pc-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-bad-business-hacks_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-spawn-in-working-gears-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-master-coin_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-promo-codes-for-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-hair-boy-rainbow_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/tap-for-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-roblox-pc_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-walking-through-wall-hacks_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/speed-hack-tool-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/como-hackear-a-cualquier-jugadores-de-roblox_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_off00003238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3238 22612 bytes
SHA-256: 082565f060f5d00e2d7cc9796ed76a9854cb921ff830ed26fe02f8efd3535814
font_01_sfnt_off00006485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6485 19204 bytes
SHA-256: 3b45395665eac7d1ca49a184afd242b7104c6b301d7e3ae82c29efcacac9ff4b

Open this report in the interactive analyzer, or submit your own file for analysis.