Malicious PDF — malware analysis report

Static analysis result for SHA-256 43e52f1c620780c4…

MALICIOUS

PDF

35.7 KB Created: 2021-06-29 17:42:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: eeaf15abd0a1d14f64239b881852501f SHA-1: 89b6719ca637be215dd442aaa2c740d0e23746dd SHA-256: 43e52f1c620780c4b19e80e51df9bc0fbe59de8eba00e1f2958ae12472a4ea2c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be game-related cheats or generators. The primary link redirects to malicious infrastructure, indicating a phishing or malware distribution attempt. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a social engineering tactic to lead users to potentially harmful content.

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/ccv3-roblox-cheats-2021-game-hack In PDF document text
    • http://perpus.stikesphi.ac.id/repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-virusescom-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-do-i-get-free-robux-with-in-24-hours_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/hack-to-train-railway-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-shirt-template-png-free-shipping_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/minecraft-112-hacked-client_GM479516143.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_off000032ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32EF 22564 bytes
SHA-256: c823ce96d7b25478b0174c13b9675111bd80cd40707e1e88755d3a1f6902a76a
font_01_sfnt_off00006535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6535 19448 bytes
SHA-256: 0add2e283306aaed02262ed134c69091ca1def3fd9f7cb33e5e58da4100fbb38

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