PDF malware analysis — malicious · ab5ebd8b4b253052

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 19:49:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: c581f059d93eb321fc0d6587a4c63b6c SHA-1: d857139c9f4b3bae31c9bb6fac1bb28dbb193809 SHA-256: ab5ebd8b4b2530529959cfed57ab8bb70f749330f9974028b88f9bfca4e63327

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a link farm, directing users to websites offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of multiple external URLs suggests an attempt to redirect users to malicious or deceptive content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/431946152/best-working-roblox-hacks-2021-game-hack PDF link annotation
- http://www.flytec.com.py/download/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- http://www.flytec.com.py/download/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://www.flytec.com.py/download/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
- http://www.flytec.com.py/download/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.flytec.com.py/download/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- http://www.flytec.com.py/download/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- http://www.flytec.com.py/download/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
- http://www.flytec.com.py/download/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
- http://www.flytec.com.py/download/files/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
- http://www.flytec.com.py/download/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
- http://www.flytec.com.py/download/files/100-robux_GM431946152.pdfIn PDF document text
- http://www.flytec.com.py/download/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
- http://www.flytec.com.py/download/files/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
- http://www.flytec.com.py/download/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.flytec.com.py/download/files/tiktok-comments-free_GM835599320.pdfIn PDF document text
- http://www.flytec.com.py/download/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
- http://www.flytec.com.py/download/files/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
- http://www.flytec.com.py/download/files/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
- http://www.flytec.com.py/download/files/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
- http://www.flytec.com.py/download/files/free-minecraft-java-server_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00004fca.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FCA	26476 bytes
SHA-256: `5bf479af97106cc1fe745ba501f18e5235f382d5e1533fa6cca1c71338fd3b62`
`font_01_sfnt_off00008db6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DB6	2824 bytes
SHA-256: `94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4`
`font_02_sfnt_off00009765.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9765	19292 bytes
SHA-256: `a845e22665b62f96a9c24e0c5397c4f4179fa70883a05abc08fb9ac72bd81945`

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