Malicious PDF — malware analysis report

Static analysis result for SHA-256 e753e8fe2948c064…

MALICIOUS

PDF

43.4 KB Created: 2021-05-13 19:25:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7d728fb7f06ab106ee4d124ebc55dac2 SHA-1: add0a670e7491690031e685346af530d9dc9219a SHA-256: e753e8fe2948c0644f6c9fea1d7d9fb2676b222ce79175d944784f343c6c7e68
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a large number of external links, many of which point to files that appear to be related to game hacks or cheats. The ML classifier strongly indicated maliciousness, and the presence of a 'download button' lure further supports a malicious intent. The document likely serves as a lure to direct users to download malicious payloads disguised as game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/bad-minecraft-free-game-hack
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-hack-generator_GM406889139.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/minecraft-apk-android-free_GM479516143.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-rewards-free-spins_GM406889139.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master-2021_GM406889139.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/minecraft-survival-free_GM479516143.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-android_GM431946152.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/windows-10-minecraft-free-with-java_GM479516143.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/how-to-actually-get-free-robux_GM431946152.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-not-used_GM431946152.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-pc-free_GM479516143.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/master-coin-master-free-spin_GM406889139.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/op-rewards-free-robux_GM431946152.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-hack-android-no-root_GM406889139.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/free-spins-coin-master-ios-2021_GM406889139.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/easy-robux_GM431946152.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today_GM406889139.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/robux-free-c_GM431946152.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/roblox-play-as-guest-free_GM431946152.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/get-free-robux-without-doing-anything_GM431946152.pdf
    • https://elearning.man2pamekasan.sch.id/__statics/gudangsoal/files/minecraft-bedrock-download-pc-free_GM479516143.pdf
    • https://playhack.in/minecraft
    • https://code.giftcards.com
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d5c.bin
bc79dad633e6d8cd30538f41ea4fe8c8f95cf79c9c750ba9fb4e70565a10fd05		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D5C 25500 bytes
font_01_sfnt_off000088a4.bin
384105d45f3b455646b6eb64dcdb09349e5e1756e4baf8ede6c7c1462ef2dc47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88A4 17956 bytes

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