PDF malware analysis — malicious · b499d7ec2aa64ddb

MALICIOUS

PDF

35.6 KB Created: 2021-06-27 05:19:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 16cf2d067edb789616fc7d5092699d6a SHA-1: 5db39d7965b2f0be895e31cc4e71562cae72b617 SHA-256: b499d7ec2aa64ddb776a701ad2f0bae09861e0232880e07b442ff075cc8e3246

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains multiple embedded URLs and a document body that promotes cheats and hacks for popular games. The ML classifier strongly indicates maliciousness, and the presence of download lures and callback phishing elements suggests a social engineering attempt to trick users into downloading malware or engaging with a scam. The primary URL http://netcdn.co/app/431946152/roblox-furk-blocburg-cheat-game-hack is likely the distribution point for a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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/roblox-furk-blocburg-cheat-game-hack PDF link annotation
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-hack-into-somebodys-roblox-account_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/minecraft-modded-client_GM479516143.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-use-redstone_GM479516143.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-roblox-2021-rich-accounts-logins_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/walking-through-hack-roblox-78_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/money-hack-roblox-rocitizens_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
- http://www.onusgroup.co.in/uploaded_files/userfiles/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00003352.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3352	22580 bytes
SHA-256: `25c0f45a2a652534eb29cf7554b678c6131835d22e7878b5c0a72a6cde1c4a20`
`font_01_sfnt_off000065fc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65FC	19232 bytes
SHA-256: `8a42ca76c390ec404f753fd7983ef4f3dd2222d10cd7cf8a55bb8cb3741ec7e8`

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