Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ed0a4273900a4cb…

MALICIOUS

PDF

44.7 KB Created: 2021-05-13 05:15:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: db65160b5852fb9f564981122afce7ef SHA-1: 52f6a1cde957b6ff76b3b09001fd9832478f9aac SHA-256: 4ed0a4273900a4cbb237f412c0443c1da56f18b9ccbff371b70b635496a70ed0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO link farms for game cheats and hacks. The document body and extracted URLs suggest a lure for free Robux or Coin Master exploits. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a high likelihood of redirecting users to malicious sites designed for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.xyz/app/431946152/free-robux-no-download-game-hack PDF link annotation
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://elearning.mimunggulan-kotagorontalo.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_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_003_off00004cc5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CC5 26216 bytes
SHA-256: 5bc0c8de7fc60238d39247af751f7c3181b96b17408cf55c81294028d63079f5
font_01_sfnt_off00008ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD1 18824 bytes
SHA-256: a83584a15d83770571e134086905248a9fe783ccc3b424d06d308178a7ec7f42

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