Malicious PDF — malware analysis report

Static analysis result for SHA-256 e678a09c79ae4cc8…

MALICIOUS

PDF

43.3 KB Created: 2021-06-03 23:03:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: be7f99e7a50dfdf4765085d77dece45f SHA-1: 62d3b8272565077924da4f2f226d6b9a253bd91d SHA-256: e678a09c79ae4cc859aa85bd0cd1cf3e913ba8f085421af1f0b1cf98c0e537fb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a URL associated with game hacks and generators, indicating a lure for users to download further content. The presence of multiple links to similar deceptive content and the ML classifier's high confidence score support this assessment. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/406889139/coin-and-spin-link-game-hack In PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/rbx-earn_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/tiktok-free-likes-and-followers-2021_GM835599320.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id/repository/synapse-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://laboratorium.sman2metro.sch.id//repository/show-me-how-to-get-free-robux_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
stream_004_off00004ef3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EF3 24980 bytes
SHA-256: d4c763cffd6f2ac7324adad6a64fcc9549ee082de31c948de88f5e2a260baa4f
font_01_sfnt_off00008856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8856 17736 bytes
SHA-256: 9fd78c46a16481f8ba83db086433be65d4d5874e7db978b85e0d8aad6b4172bd

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