PDF malware analysis — malicious · 4c312e2de7f317f0

MALICIOUS

PDF

36.8 KB Created: 2021-06-22 03:21:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14

MD5: c1393e0173898cd077d428ccb98e3f9d SHA-1: 7ef39078394365e80621949e1b44a66bf16f9641 SHA-256: 4c312e2de7f317f0907c85c864d991441c4304457e2220a508b486be3d83da9e

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of SEO-optimized links, many of which point to game-related hacks and cheats, suggesting a link farm or phishing lure. One embedded URI, http://netcdn.co/app/406889139/coinmasterfree-game-hack, is directly associated with a potential download. The presence of a 'download button' heuristic further supports the interpretation that the document is designed to trick users into downloading malicious files.

Machine Learning

Nyx PDF Classifier malicious score 0.9886

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/406889139/coinmasterfree-game-hack PDF link annotation
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-email-rewards_GM406889139.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/pokemon-go-free-online-game_GM1094591345.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-spin-cheat_GM406889139.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_off00003143.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3143	22588 bytes
SHA-256: `6a9921c66f1920ad2011b463d275b90ab77321b75296548ee4570858fd2ce58b`
`font_01_sfnt_off000063ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63BA	2896 bytes
SHA-256: `c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd`
`font_02_sfnt_off00006d9f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D9F	18092 bytes
SHA-256: `e3b824c700fc1afb9be61c0fda879df8bb3fefe3698910b387f7b25b5267b414`

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