PDF malware analysis — malicious · 0e504b3dfe102fb5

MALICIOUS

PDF

34.7 KB Created: 2021-06-19 00:38:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 4d8ae5fbc90282c834014d1f52037a11 SHA-1: 40d1b89aaf5074643f1b19a9e23383f96753a5ea SHA-256: 0e504b3dfe102fb5f6e6043d93643392de1ce9abecfb8cb3b21d5dd62c6b6828

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promotes 'free Robux' and game hacks, indicating a phishing or scam attempt. The heuristic PDF_SEO_LINK_FARM firing suggests a large number of external links are present, likely to malicious or deceptive sites. While no scripts were explicitly extracted, the presence of embedded URLs and the overall theme strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-buy-free-robux-2021-game-hack PDF link annotation
- https://tjiko.de/wp-content/uploads/fsqm-files/free-robux-hackget-up-to-22-500-free-robux-today_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/roblox-crashes-when-cheat-engine-open_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/how-to-get-robux-with-cheats_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/how-to-hack-pizza-place-roblox_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/roblox-jailbreak-cheat-codes-pc_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/hack-account-roblox-2021-edit-this-cookies_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/roblox-cheat-robux-gratuit-fr_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/how-to-use-cheat-engine-in-roblox-snow-shoveling-simulator_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/free-coin-master-coins_GM406889139.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/how-to-hack-any-user-in-roblox_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/roblox-is-getting-hacked_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/free-robux-codes-2021-not-used-june_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/roblox-minning-ticoon-vidos-hack_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/files59-roblox-hack_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/roblox-hack-week-2021_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/roblox-project-pokemon-cheats_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/money-hack-roblox-adopt-me_GM431946152.pdfIn PDF document text
- https://tjiko.de/wp-content/uploads/fsqm-files/free-robux-codes-july-2021_GM431946152.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_off000030dd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30DD	22092 bytes
SHA-256: `88798a8f070dc9900d5a312b914686a42596af903107a8058064ce54ded7cf2e`
`font_01_sfnt_off000061bc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61BC	19276 bytes
SHA-256: `4ca2543a02a7ec7b0019a7dda2c1062e6e3abc91e5def89c9a6ce5117f3b8e49`

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