Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef7d15d860b9640…

MALICIOUS

PDF

43.3 KB Created: 2021-05-16 05:01:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: adebe3350d24d75cb70f16964e4488c8 SHA-1: 9498f04426c84a2df4eef9c2298c1b7c2334415b SHA-256: fef7d15d860b964003858b5948fe95a0588fbd4c6f4c0f7f073bb5900f97333b
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized and point to game-related hacks and free currency. The ML classifier strongly indicated maliciousness, and the presence of a 'download button' heuristic suggests a lure for users to click these links. The primary URL https://netcdn.xyz/app/406889139/haktuts-coin-master-free-daily-spins-game-hack is likely the initial payload or a gateway to further malicious content.

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/406889139/haktuts-coin-master-free-daily-spins-game-hack
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/how-can-you-get-minecraft-for-free_GM479516143.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/free-coins-coin-master-link_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/haktuts-coin-master-free-spins-2021_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/hackear-coin-master-android_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/coin-master-heaven-links_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/coin-master-spin-and-coins-free_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/can-you-get-robux-for-free_GM431946152.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/get-free-robux-gg_GM431946152.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/hack-coin-master-apk-2021_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/free-coin-master-spins_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/coin-master-hack-https-coinms-net_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/get-free-spins-in-coin-master_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/coin-master-hack-2021_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/earn-robux_GM431946152.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/june-29-coin-master-hack-no-human-verification_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/feb-23-2021-free-coin-master-spins_GM406889139.pdf
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/coin-master-pc-game-free-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c64.bin
b003de91ffe2734b6b94021b0ff8be999b1b13bb9524db030146a56db4ab0788		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C64 25832 bytes
font_01_sfnt_off0000863b.bin
ded7de44f7a870837d4ef416985ae0b9ef78dce3540f45b1558d033e63b05ca7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x863B 18620 bytes

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