PDF malware analysis — malicious · 857472f8102c27f5

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 01:14:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: db87c2d513b09748a62620e5bb68d54f SHA-1: ef6779bd02abb338991fe56202439f2cf38b7417 SHA-256: 857472f8102c27f5d479adeca9b5d81f1b45f7e830817866e37be898eb983ec4

62 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document body and extracted URLs indicate a lure for free game items, likely leading to malware or unwanted software. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous embedded URLs supports a phishing or social engineering attack pattern. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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.tw/app/431946152/free-roblox-accounts-with-robux-that-work-not-banned-2021-game-hack
- http://lib.uho.ac.id/library//repository/minecraft-free-download-iphone_GM479516143.pdf
- http://lib.uho.ac.id/library/repository/coin-master-hacking-news_GM406889139.pdf
- http://lib.uho.ac.id/library//repository/coin-master-hack-apk-2021-download_GM406889139.pdf
- http://lib.uho.ac.id/library/repository/coin-master-hack-tool-v1-9-pc_GM406889139.pdf
- http://lib.uho.ac.id/library/repository/hacker-de-roblox-00_GM431946152.pdf
- http://lib.uho.ac.id/library//repository/pokemon-go-free-7k-eggs_GM1094591345.pdf
- http://lib.uho.ac.id/library/repository/robux-download_GM431946152.pdf
- http://lib.uho.ac.id/library//repository/how-to-get-free-admin-in-roblox_GM431946152.pdf
- http://lib.uho.ac.id/library//repository/coin-master-fan-page_GM406889139.pdf
- http://lib.uho.ac.id/library/repository/free-roblox-com_GM431946152.pdf
- http://lib.uho.ac.id/library/repository/pubg-uc-apk_GM1330123889.pdf
- http://lib.uho.ac.id/library/repository/pokemon-go-vs-free-fire_GM1094591345.pdf
- http://lib.uho.ac.id/library/repository/coin-master-hack-version-2021-download_GM406889139.pdf
- http://lib.uho.ac.id/library//repository/coin-master-hacks-to-get-spins_GM406889139.pdf
- http://lib.uho.ac.id/library/repository/free-spins-for-coin-master-hack_GM406889139.pdf
- http://lib.uho.ac.id/library//repository/coin-master-free-coin-hack_GM406889139.pdf
- http://lib.uho.ac.id/library/repository/free-minecraft-capes_GM479516143.pdf
- http://lib.uho.ac.id/library/repository/roblox-hack-tool-apk-download_GM431946152.pdf
- http://lib.uho.ac.id/library//repository/coin-master-link-today_GM406889139.pdf
- http://lib.uho.ac.id/library//repository/coin-master-free-coins-cheat_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_off000031e5.bin` `2125c111ac05bc077a8819ae04ee5e058d12febe4b39d766f7563db4b9d2323f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31E5	22120 bytes
`font_01_sfnt_off000062dd.bin` `e8dc8af608a2467c92ba912a1f660b74916591188ffd601a7d8b89018af53e3a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62DD	20124 bytes

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