PDF malware analysis — malicious · 045f779451f58817

MALICIOUS

PDF

49.5 KB Created: 2021-05-13 02:36:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: e367f2eac9528db916907b32984bcfaf SHA-1: f0805c3805bc595e3b693f7125bec474f1bad02e SHA-256: 045f779451f5881799507aa8bdb778d24bc34177eb9a49c0fa2366e559cc1713

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to other PDF files related to game hacks and rewards, indicating a link farm or phishing attempt. The presence of a call-to-action button further supports the malicious intent to lure users into downloading potentially harmful content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9349

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.xyz/app/431946152/oprewards-com-robux-game-hack PDF link annotation
- https://www.modestuae.com/uploaded_files/userfiles/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/roblox-generator-com_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/roblox-free-no-download_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/is-roblox-studio-free_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.modestuae.com/uploaded_files/userfiles/files/easy-way-to-get-robux_GM431946152.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
`font_00_sfnt_off00004cb5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4CB5	27080 bytes
SHA-256: `55fa21bf6f754b28f3884febc8bdcc9cf7ab5f7a8ad9290760e7d7bad994daf8`
`font_01_sfnt_off00008be6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BE6	7272 bytes
SHA-256: `f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924`
`font_02_sfnt_off00009d56.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D56	18852 bytes
SHA-256: `cf2c3b83afe77c4831f4d7babd4a60d9ba9b4343e1e798506478eab5d5eea77b`

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