Malicious PDF — malware analysis report

Static analysis result for SHA-256 94059afbfaf6d58e…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 05:01:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e7ccec8abf9c23cb8901d5814b7e0882 SHA-1: 8606e7a0feadd92a991f5de03dfc8e1118cf784d SHA-256: 94059afbfaf6d58e578f5868175bd94c72ee92046c6b298992369f754b56c1a8
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.xyz/app/406889139/coin-master-daily-free-spins-link-today-blogspot-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-get-free-robux-without-doing-anything-2021_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_003_off00004aec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AEC 25184 bytes
SHA-256: 868b2c4b92622c0cd0e11220522cc0de0c1be86451e43f65ce419fea425523ea
font_01_sfnt_off00008590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8590 19156 bytes
SHA-256: c6e44e2d9e69c9765448dadb9ef0e8fe599e3907f261bb989cdf753410e037ff

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