PDF malware analysis — malicious · 351353299462ade7

MALICIOUS

PDF

41.7 KB Created: 2021-05-13 22:51:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: a3c52834f1afd70e82e5de6a353e7336 SHA-1: 7088e10a6ef69310e21965c0c3f26d15f59977ef SHA-256: 351353299462ade758cebe5ee5bf792cd7816fb9e57a3c6bd9138344ef7e253b

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, identified by the PDF_URI and EMBEDDED_URL heuristics, pointing to external websites. The PDF_SEO_LINK_FARM heuristic indicates a large number of these links, suggesting a link farm designed to drive traffic to potentially malicious content. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of the document. While no scripts were explicitly extracted, the presence of numerous external links and the ML classification strongly suggest the document is intended to redirect users to malicious sites, likely for malware distribution or phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/static-moonactive-net-rewards-game-hack PDF link annotation
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/www-coinmaster_GM406889139.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-com_GM406889139.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/static-moonactive-net-link_GM406889139.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/minecraft-images-free_GM479516143.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/hack-avatar_GM431946152.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
- https://elearning.mtsmanusaci.com/__statics/gudangsoal/files/free-coin-spin_GM406889139.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_off00004b76.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B76	23740 bytes
SHA-256: `b3010d680630af259f0cbbbfe253e59b7ea059c75f5bdc25524e41faada5947d`
`font_01_sfnt_off00008101.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8101	18000 bytes
SHA-256: `9966684b9b98ae9c159578c69a57ea9c5c22f2a0e556d50b45713339f77195c2`

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