PDF malware analysis — malicious · 52091cd5cd4dde20

MALICIOUS

PDF

34.4 KB Created: 2021-06-21 22:31:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: c5a4e98a5b8aa8bf689a89f3a303cc79 SHA-1: 6c17ada9bd58a46b5033b85be37ca387c7a6c335 SHA-256: 52091cd5cd4dde20e164ddede708513dd8d7aaf2bba7d84789ea5c63ea203b64

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which are presented as download opportunities for game cheats and hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous SEO-optimized links suggests a link farm designed to distribute potentially unwanted or malicious files. No scripts were extracted from this sample.

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/roblox-free-model-virus-game-hack
- https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-hack-roblox_GM431946152.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-free_GM406889139.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-hack-app-android_GM406889139.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/free-spins-and-coins-coin-master_GM406889139.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/free-spins-coin-master-links_GM406889139.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-generator-no-survey_GM431946152.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/robux-free-robux_GM431946152.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-hack-robux-2021-in-1-min_GM431946152.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/flip-master-free-coins_GM406889139.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-hack-online-no-human-verification_GM406889139.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/update-coin-master-free-spins_GM406889139.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/get-free-robux-com_GM431946152.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/el-mejor-hack-de-roblox-del-mundio_GM431946152.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-spin-hack_GM406889139.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-get-free-cards-in-coin-master_GM406889139.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/coin-master-hack-mod-apk-android-1_GM406889139.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/free-roblox-hair-codes_GM431946152.pdf
- https://new.minsatulearning.com/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00003062.bin` `aa0e5de8a9655e0a4492c8f6480748c59e8255dde7cd5bce6bc47835671d98fa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3062	21768 bytes
`font_01_sfnt_off0000606d.bin` `5c071632e1e1c74ec74170570e1f6c0f8ded45c5714f77cc2b6f27bd65223166`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x606D	19412 bytes

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