Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebc758dba78b429e…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 12:50:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c6b54998c8a8702aeed15a72823ce9cd SHA-1: fd83fc5f5a1e73a40518745ce0d17c31869cd57e SHA-256: ebc758dba78b429e1218b9188b312bc35e3f841fd6af8011d0f2cf8a5079f447
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for free game resources, which is a common tactic for phishing and malware distribution. It includes a direct link to a suspicious URL that likely serves as a download source for a second-stage payload. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.online/app/406889139/free-spins-coin-master-march-2021-game-hack
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-roblox-card_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/coin-master-stop-attack-hack_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/roblox-robux-hack_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/robux-generator-no-verification-needed_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-spin-link-for-coin-master-haktuts_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-hack_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/play-minecraft-free-online-no-download_GM479516143.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-real-2021_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/coin-master-hack-online-cheat_GM406889139.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-a-refund-on-roblox-2021_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/rbxoffer-com-free-robux_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/pubg-uc-earn_GM1330123889.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/roblox-free-clothes-hack_GM431946152.pdf
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-without-downloading-apps_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000525c.bin
05c9a1586a8328eb1ba38f9938fab2404efa999f775e494b8e6fb679baa53d6a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x525C 25260 bytes
font_01_sfnt_off00008bac.bin
b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAC 2880 bytes
font_02_sfnt_off00009597.bin
f9f67c77da0d65153792dedd850da678f3a8682f9327ac55251990d25044da35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9597 18452 bytes

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