Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4ae346d6fb3bc92…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 10:22:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f00d47126baec82c50b1155484605aed SHA-1: cd75c2ace17e590a091e0d08085938e8d4054709 SHA-256: d4ae346d6fb3bc92ed0181689101f74fbb369007dc7745451b372ad9be479b09
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a URL in its body, all pointing to sites related to game hacks and free currency, indicating a phishing or scam lure. The heuristic firings confirm the presence of a link farm and external URIs, strongly suggesting the document's purpose is to redirect users to malicious websites. No scripts were extracted from this sample, but the overall structure and content point to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • 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.
  • 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.online/app/406889139/free-daily-spins-coin-master-2021-game-hack PDF link annotation
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/pokemon-go-basic-vs-premium-rewards_GM1094591345.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/robux-money_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-card-2021_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/pokemon-go-free-7-day-research-reward_GM1094591345.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-without-offers_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
stream_004_off000054ec.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54EC 24284 bytes
SHA-256: d5fcf265a9fee12b173aa0db1f6f3382d47993bddce3b38af489cc8c2e5cc982
font_01_sfnt_off00008c82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C82 18708 bytes
SHA-256: c65851a3c2ccf8ba249fbb480ab00bab2dc65c52c70fe6f18183c59a9b34b022

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