Malicious PDF — malware analysis report

Static analysis result for SHA-256 14633a00d51d0104…

MALICIOUS

PDF

34.6 KB Created: 2021-06-22 01:54:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c20ec9f1fd7a20f077dc96d5381b3055 SHA-1: 4ff9bd89a1f2f5f64f770788d4cb6366272a61a0 SHA-256: 14633a00d51d01049c989c926cc41ccb7898327521eee5cc1ecdb0d8020ce313
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous URLs and text fragments related to game hacks and free currency, strongly suggesting a lure for users interested in such topics. The presence of 'cmd-hacks-for-roblox' and other similar filenames, along with the ML classifier flagging it as malicious, indicates a high likelihood of malicious intent. The document likely serves as a phishing or malware distribution vector, aiming to trick users into visiting malicious sites or downloading further payloads.

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-quirks-in-boku-no-roblox-game-hack
    • http://www.marambio.com.ar/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdf
    • http://www.marambio.com.ar/images/google-roblox-games_GM431946152.pdf
    • http://www.marambio.com.ar/images/my-roblox-avatar_GM431946152.pdf
    • http://www.marambio.com.ar/images/coin-master-hack-spins-2021_GM406889139.pdf
    • http://www.marambio.com.ar/images/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • http://www.marambio.com.ar/images/robux-com-free_GM431946152.pdf
    • http://www.marambio.com.ar/images/minecraft-free-no-download_GM479516143.pdf
    • http://www.marambio.com.ar/images/cmd-hacks-for-roblox_GM431946152.pdf
    • http://www.marambio.com.ar/images/free-robux-co_GM431946152.pdf
    • http://www.marambio.com.ar/images/roblox-hack-me_GM431946152.pdf
    • http://www.marambio.com.ar/images/free-robux-generator-no-human-verification-2021-android_GM431946152.pdf
    • http://www.marambio.com.ar/images/free-robux-app_GM431946152.pdf
    • http://www.marambio.com.ar/images/coin-master-free-coins-2021_GM406889139.pdf
    • http://www.marambio.com.ar/images/free-tiktok-coins_GM835599320.pdf
    • http://www.marambio.com.ar/images/free-views-tiktok_GM835599320.pdf
    • http://www.marambio.com.ar/images/coin-master-free-spin-and-coin-links_GM406889139.pdf
    • http://www.marambio.com.ar/images/secret-roblox-hacks_GM431946152.pdf
    • http://www.marambio.com.ar/images/how-to-hack-a-roblox-account-easy_GM431946152.pdf
    • http://www.marambio.com.ar/images/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://www.marambio.com.ar/images/get-wall-hacks-in-roblox_GM431946152.pdf
    • http://www.marambio.com
    • https://www.roblox.com/.I
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003095.bin
3798b642b2ee2d953af83148834d52c4dec727bcadd707d616abf1de4e787eeb
pdf-font-stream PDF embedded font (sfnt) at offset 0x3095 21876 bytes
font_01_sfnt_off000060c6.bin
2fedbc857bf0da46d05ba136b7f9a1f2e7322ea35b790dbfa2dcee750bf557fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x60C6 19508 bytes