Malicious PDF — malware analysis report

Static analysis result for SHA-256 5807706677bf357e…

MALICIOUS

PDF

43.9 KB Created: 2021-06-11 10:13:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d977bdb58a375a71cd55110545e53fcf SHA-1: 7d2a5872bc4107f57930005935940539749feb56 SHA-256: 5807706677bf357e2eca9be7bd4e08be420930c85a5aeba7ae96e74e6e39f96b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The document body and heuristics indicate a clear intent to trick users into visiting these malicious URLs, likely as part of a phishing or scam campaign. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence score support this assessment.

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.tw/app/431946152/how-to-get-free-robux-in-games-game-hack In PDF document text
    • https://perpustakaan.stami.ac.id//repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/level-6-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-free-spins-links-app_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/get-coin-master-cards-free_GM406889139.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_off000050a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50A1 24360 bytes
SHA-256: 66bc211b284604699f9dd9082a98073a181810012b7f1f3203087b033430366d
font_01_sfnt_off0000876c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x876C 18768 bytes
SHA-256: 8386a77df147aa9e964cb955737e0369461d2d16482d28737c9e0586f42beff8

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