Malicious PDF — malware analysis report

Static analysis result for SHA-256 e642aa9f0388209f…

MALICIOUS

PDF

36.4 KB Created: 2021-06-27 13:45:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ea1edaafb84347dc3fb4c483909d34e6 SHA-1: 85e9d6664ab8135aa49ae0589ffa70f3781feb32 SHA-256: e642aa9f0388209f962d96cd75a03e390957d6de7bab1f3f78e7198d58719f7c
82 Risk Score

Malware Insights

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

The document contains numerous URLs and text referencing free in-game currency and hacks for popular games, strongly suggesting a phishing or scam lure. The presence of external URIs and the ML classifier's high confidence indicate malicious intent, likely to redirect users to sites that may host malware or attempt further social engineering. No scripts were extracted, but the document's structure and embedded links point towards a malicious link-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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-unlimited-robux-on-roblox-2021-game-hack PDF link annotation
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/free-robux-for-kids-easy_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/roblox-lost-hacks_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/are-there-any-roblox-games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/free-robux-com-today_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/roblox-shirt-creator-free_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/cmd-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/roblox-free-unlimited-robux-glitch_GM431946152.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.e-learning-manberau.com/__statics/gudangsoal/files/how-to-hack-the-games-of-roblox-to-have-visits_GM431946152.pdfIn PDF document text
    • https://www.e-learIn macro / runtime command snippet
    • https://www.roblox.com/.IIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3407 22632 bytes
SHA-256: a4664d457bd78696f0a34e27a9bd309c0b125c40c0b3591320027a28d967c134
font_01_sfnt_off0000665d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665D 20012 bytes
SHA-256: 6550ba4c9d8a3428ad66ed6784cf44b2f132c4285ebc73daca288e06cfc8acb6

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