Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f7a6a26aeab239b…

MALICIOUS

PDF

47.4 KB Created: 2021-06-13 16:32:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 847b0a0d74829faa24dd6dd270b23d1b SHA-1: 2825e1c3e562244ed6c8df7137228c6387fb596e SHA-256: 7f7a6a26aeab239b09dae279cd928e1072ecabc6b7f9cd5bf6060544b375c9e2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game-related cheats and hacks, directing users to download files from various URLs. The ML classifier strongly indicated maliciousness, and the presence of external links suggests an attempt to deliver a second-stage payload. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 http://netcdn.co/app/431946152/how-to-get-free-guns-in-cleveland-rolplay-roblox-game-hack
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/free-minecraft-codes_GM479516143.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/roblox-hack-ga_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/how-to-cheat-roblox-mining-simulator_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/free-spins-link-in-coin-master-2021_GM406889139.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/can-hacking-in-roblox-get-youarrested_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/how-to-hack-roblox-account-2021-easy_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/how-to-get-free-robux-inspect-element-2021_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/free-robux-generator-no-verification-2021_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/free-robux-without-doing-anything_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/how-to-change-your-robux-on-roblox-with-cheat-engine_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/roblox-army-free-robux_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/how-to-hack-robux_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/robux-for-free-app_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/baldisbasicsbetafreeitemsonmap-roblox_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/free-roblox-shirt-maker_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/bloxburg-com-free-robux_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/game-guardian-roblox-hacks_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/free-robux-no-inspect-no-info_GM431946152.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • http://perpustakaan.fe.unismabekasi.ac.id/katalog-buku/repository/free-robux-without-survey-or-download_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000568f.bin
8a4638c6a7102f7ce9fc304e204ca54ab478232d08a127bc0ae041dd4a24912e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x568F 26576 bytes
font_01_sfnt_off000093ee.bin
928ff4014151d26aafbb6812ef1d61ec1c37b187c48794c082f5c375cbebe411		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93EE 19228 bytes

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