PDF malware analysis — malicious · c8e7d4da778f0a8f

MALICIOUS

PDF

43.1 KB Created: 2021-05-19 22:38:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: c874fb0e99809240c01db0a3aa08b669 SHA-1: 6a65eb5709429f39b8861ed73ac780a6a16edc93 SHA-256: c8e7d4da778f0a8f5e6b5a97482d6185fb86f0818f8bf52f1d650ce45a73f321

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are related to game cheats and hacks, suggesting a lure for users to download potentially malicious content or visit phishing sites. The ML classifier strongly flagged this PDF as malicious, and the presence of a large number of external links further supports this assessment. No scripts were extracted, but the document's structure and embedded URLs indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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/406889139/coin-master-spins-game-hack PDF link annotation
- http://elearning-mtsn35.net/__statics/gudangsoal/files/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
- https://elearning-mtsn35.net/__statics/gudangsoal/files/coin-master-level-3_GM406889139.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
- https://elearning-mtsn35.net/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
- https://elearning-mtsn35.net/__statics/gudangsoal/files/free-roblox-generator_GM431946152.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
- https://elearning-mtsn35.net/__statics/gudangsoal/files/coins-master_GM406889139.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
- https://elearning-mtsn35.net/__statics/gudangsoal/files/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
- http://elearning-mtsn35.net/__statics/gudangsoal/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
- https://elearning-mtsn35.net/__statics/gudangsoal/files/minecraft-wurst_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
`stream_003_off00004c40.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C40	24212 bytes
SHA-256: `6b1cf34d9ea6bc1fb6388615c914562a8307e6068145f9e42cd1c66e8df0bdd9`
`font_01_sfnt_off000083c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83C2	19052 bytes
SHA-256: `f21205d55462409caca19f75da0ddeafb046be1813db0a124690516ca7ada22b`

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