Malicious PDF — malware analysis report

Static analysis result for SHA-256 1360169ec41331fa…

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 17:34:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: deb4faeb17a948cfb81125a160d5148e SHA-1: 3c101edbf785166a864a417150cc0bf99ddf1f82 SHA-256: 1360169ec41331fa53faf6699c2117144fba31d3fa37d2ac4f65e47bef96a44a
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, identified as a link farm, pointing to websites offering cheats and hacks for games like Coin Master and Robux. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a 'download button' lure further supports a malicious intent. The document likely serves as a lure to drive traffic to potentially malicious sites or initiate unwanted downloads.

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/406889139/coin-master-free-spin-codes-game-hack
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/se-puede-hackear-coin-master_GM406889139.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-ios-download_GM406889139.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/free-t-shirt-roblox_GM431946152.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-real_GM431946152.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/minecraft-pe-texture-packs-free-download_GM479516143.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/apps-that-give-you-free-robux_GM431946152.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/free-robux-without-doing-anything_GM431946152.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/bloxpage-free-robux_GM431946152.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link-2021_GM406889139.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/free-spins-from-coin-master_GM406889139.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/coin-master-fan_GM406889139.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/free-spin-coin-master-link-today_GM406889139.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/coin-master-hack-xyz-2021_GM406889139.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/roblox-avatar-editor-free_GM431946152.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/get-free-robux-generator_GM431946152.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-group_GM406889139.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdf
    • http://elearning.mis-arrahmahuk.sch.id/__statics/gudangsoal/files/150-free-spins-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d9d.bin
7fc1d0406961361a4da86baead4acd2ceaaa5772ca53d7e8f414d5cc95cabf2a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D9D 24372 bytes
font_01_sfnt_off0000852d.bin
6c6954b9f81c735a5c4580de4c42457a99792272849cec4d30b191d18cdb5601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x852D 18060 bytes

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