Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7599e580cbcc16e…

MALICIOUS

PDF

41.9 KB Created: 2021-05-19 06:49:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 228345440b4fbd99d051b893fd8c92db SHA-1: ded8b1b4cb7b278d9943334736b162bfae14cd1f SHA-256: f7599e580cbcc16e44d8245820c71009b707c9ef30d10831f883a8172f2aca61
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which are SEO-optimized with game-related keywords, suggesting a link farm or phishing attempt. The document body explicitly mentions 'Pokemon Go Free Movement' and includes a URL pointing to a 'pokemon-go-free-movement-game-hack', reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/1094591345/pokemon-go-free-movement-game-hack
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/minecraft-free-download-android-apk-014-0_GM479516143.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdf
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/dailyrobux_GM431946152.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-roebucks_GM431946152.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/coin-master-cheat-free_GM406889139.pdf
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/coin-master-hack-game-download-ios_GM406889139.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdf
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/minecraft-free-reddit_GM479516143.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/hack-card-collection-coin-master_GM406889139.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/how-to-hack-someone-on-roblox_GM431946152.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/coin-master-free-link-spin_GM406889139.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/earn-points-for-robux_GM431946152.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/free-spin-link-in-coin-master_GM406889139.pdf
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/get-free-spins-from-coin-master_GM406889139.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/pokemon-go-free-pokecoins-xyz_GM1094591345.pdf
    • http://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-without-root_GM406889139.pdf
    • https://e-learning.mtsn7kediri.sch.id/__statics/gudangsoal/files/roblox-controversy_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b22.bin
978b21a6d18ee945a6e3bdc2c86877a9e9984a7b4c7345da93be7db748492b70		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B22 24212 bytes
font_01_sfnt_off00008258.bin
47e9609399f6f25534162d66cbaec7f0ddf876a1a84abbdf8c7d1ffb30345fce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8258 18060 bytes

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