Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e8e14cce6c31e46…

MALICIOUS

PDF

48.3 KB Created: 2021-05-19 06:06:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 484c11cbd16ed6d194d71c8f592305e5 SHA-1: 29cd8cdd86519d84aebef44fb512428a2162caa9 SHA-256: 9e8e14cce6c31e462fe3e0164a0aff257f5555758641b4331e8399365ba686c9
82 Risk Score

Malware Insights

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

The PDF contains multiple links to external resources, many of which are algorithmically generated and point to game-related hacks and cheats. The ML classifier also flagged this PDF as malicious. The presence of a 'download button' heuristic further suggests a user-interaction-driven download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 4

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/classic-minecraft-net-hacks-game-hack
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/toolbox-mod_GM479516143.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/free-pet-food-for-coin-master_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/coin-master-attack-block-hack_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/coin-master-hack-online-2021_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/hack-coin-master-spin_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/roblox-free-robux-website_GM431946152.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/roblox-generator_GM431946152.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/hack-mod-coin-master_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/coin-master-32-hack-apk-download_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/www-roblox-com-robux_GM431946152.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-verification_GM431946152.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/free-spin-link-coin-master_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/hacks-for-coin-master_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/roblox-zone-free-robux_GM431946152.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/free-spins-coin-master-daily_GM406889139.pdf
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/minecraft-pe-free_GM479516143.pdf
    • https://code.giftcards.com
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e54.bin
183d985eefc44d029df4f9d877d905b49a54bed86f6bf834480e7faab5563314		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E54 29656 bytes
font_01_sfnt_off000091ec.bin
fcfcd28869b8d6c7503d63ed8d48371ec5b580fea2733193e2acbb82b3d30a76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91EC 2944 bytes
font_02_sfnt_off00009c17.bin
06eb0692cb0ff670c8084f221f19fc536b6b0c4a84b00058b05a05adc7fae17c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C17 17812 bytes

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