Malicious PDF — malware analysis report

Static analysis result for SHA-256 466065087fec4862…

MALICIOUS

PDF

47.0 KB Created: 2021-05-15 14:04:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3385944e701beb04221428677546437c SHA-1: 8140ff3556b92cc98e4821e90597ebfa1576c9ff SHA-256: 466065087fec4862a02f00840adf915ac8a1f1c2192f70c69f3404d0d7247b84
102 Risk Score

Malware Insights

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

This PDF document contains numerous external links, many of which are structured as a link farm for SEO purposes, pointing to sites offering game hacks and cheats. The presence of a 'download' button lure further supports the intent to trick users into visiting these sites. The ML classifier strongly indicated maliciousness, and the overall structure suggests a phishing or potentially unwanted software distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/431946152/robux-premium-game-hack
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-ios_GM406889139.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-robux-without-downloading-anything_GM431946152.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-2021_GM406889139.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-2021-free-spins-link_GM406889139.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/hack-coin-master-for-android_GM406889139.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-spin-link-of-coin-master_GM406889139.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-pe-for-free_GM479516143.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/lazyblocks-com-free-robux_GM431946152.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/roblox-hacking-website_GM431946152.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/minecraft-free-online-unblocked_GM479516143.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-coin-master-game_GM406889139.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/pig-master-coin-master-free-spin_GM406889139.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-robux-place_GM431946152.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-com_GM406889139.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/can-i-get-free-robux_GM431946152.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/actual-free-robux_GM431946152.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdf
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/blogspot-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_off00004c5a.bin
391066fea42d155697ccd6ee0684033aced2b256a97b7f0cf788b44dbfcbfdc4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C5A 33180 bytes
font_01_sfnt_off00009592.bin
177267aa0ce1c90065d8421ade4190e52cdc6c4cb76b2453afd409bcd911e8d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9592 18384 bytes

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