PDF malware analysis — malicious · 44f1376500f7352e

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 00:34:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 53a5d0ae9a03049d92636c9e76510cc9 SHA-1: ec95e8c44faf9fa1731a33168fd938e5f6bbd1c0 SHA-256: 44f1376500f7352ea697fb805a2bcc4390c5261ce0c09ac10054b59fa856d4ac

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a high-severity heuristic firing for a game hack redirect lure, pointing to a URL that promises free in-game items. The document body and numerous extracted URLs reinforce this theme, suggesting a social engineering tactic to trick users into visiting malicious sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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/406889139/coin-master-free-link-spin-game-hack PDF link annotation
- https://weddingcards-expert.tw/upload/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/free-robux-getter_GM431946152.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/roblox-1-million-robux-cheat_GM431946152.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/roblox-robux-and-tix-hack-no-survey_GM431946152.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/how-to-get-free-robux-hacks-2021_GM431946152.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/free-robux-no-email_GM431946152.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/free-roblox-codes_GM431946152.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/roblox-scripts-for-games-hack_GM431946152.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
- https://weddingcards-expert.tw/upload/files/free-spins-on-coin-master-generator_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
`font_00_sfnt_off00002e15.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E15	22580 bytes
SHA-256: `8a32d27d52aede39aaa414e4517ad8a54afc088eff9d7f08c4e65f405ffca24d`
`font_01_sfnt_off000060bc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60BC	18344 bytes
SHA-256: `4cc6e2dc521752f6662ff63411afc6c7bdb40e83b7743aeaa6a2e3eea921da6e`

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