Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce51f60219cb43e…

MALICIOUS

PDF

45.4 KB Created: 2021-05-18 01:23:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 39e65e1f246d829777b8279e789bf088 SHA-1: 5383697e07ef2108472f758db85c23d1b366d315 SHA-256: fce51f60219cb43e6d30c5821ce783d8d0b456a931304811201c58403460860d
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are disguised as game hacks or cheats. The primary URL, https://netcdn.xyz/app/406889139/coin-master-ios-hack-game-hack, suggests a malicious download lure. The heuristic PDF_SEO_LINK_FARM indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to distribute malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/406889139/coin-master-ios-hack-game-hack
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-download-2021_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/robux-com-free-robux_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-free-spins-iphone-2021_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-400-spins-coins-master_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-star-codes-roblox_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-roblox-accounts-2021-with-robux_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/how-to-hack-any-roblox-account_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-spin-in-coin-master_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/minecraft-dungeons-free-download-pc_GM479516143.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-get-free-spins_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-free-spin-redeem-code_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/free-robux-stream_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/how-to-earn-free-robux_GM431946152.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-3533-android-hack_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-gameplay_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download-2021-android_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spins_GM406889139.pdf
    • http://elearning.mtsn1sby.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-haktuts_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a07.bin
d78986b0c30a2bb1a521c73603731e2c7ac1f2a64cbc10cb763d4e8b0406462c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A07 26124 bytes
font_01_sfnt_off00008570.bin
4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8570 3400 bytes
font_02_sfnt_off0000909a.bin
b284cc0a3260b800c0eb101cd03c26d28dcaee11de2dc9fb598807f0165498ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x909A 17716 bytes

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