Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e9fe882a285951…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 12:27:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 97c0be743145ae5651fc36c8bcba1748 SHA-1: 1eacb0ab6aa7d97c9458443714e5cb3c34af330b SHA-256: 49e9fe882a2859519250efeb6bda239f80a9ba13ae58cc2125ccd55d47f32ae7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' or 'game hacks'. The document body and heuristics indicate a lure designed to trick users into visiting these malicious URLs. While no scripts were explicitly extracted, the nature of the links suggests a potential for further malicious activity, such as downloading additional payloads.

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/431946152/free-robux-without-verification-or-survey-game-hack In PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/roblox-free-model-rules_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/roblox-mineverse-cheats_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/roblox-g_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/synapse-x-roblox-free-download-2021_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/how-to-get-free-robux-without-hacking-2021_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-roblox-accounts-with-robux-that-work-not-banned_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_off0000326d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x326D 22152 bytes
SHA-256: 903b8863dac9ba99752617da8ca74254a601ac4ec9691868581456e8523907df
font_01_sfnt_off000063a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A3 19732 bytes
SHA-256: 2b0675f33db550cd9a8e3dc1ba0bd2c431e10f6529817ff9c59fda3edd6e12a5

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