PDF malware analysis — malicious · c6ab373fb0267dd4

MALICIOUS

PDF

46.6 KB Created: 2021-05-17 16:30:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: deabcd2b80f137998d15f2729ca5118c SHA-1: 20a2f27805cdf3e8e5ac85f2f488ee5266b239eb SHA-256: c6ab373fb0267dd4fbbf632980761f86c519ba21694d3a78d2a47c5d7618027f

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, many of which point to files with names suggesting game cheats or hacks, such as 'blox.pink-free-robux-game-hack' and various 'coin-master' related PDFs. This indicates a likely attempt to lure users to download malicious content. The presence of a visual download button further supports this phishing-like lure.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

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/431946152/blox.pink-free-robux-game-hack PDF link annotation
- https://diendientuvn.com/public/upload/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/minecraft-menu_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-apk_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/spin-link-coin-master_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004995.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4995	26068 bytes
SHA-256: `1113ac52d25c89e96c96e7ed15d9ea855a80a416df30973afd25a50a15c88029`
`font_01_sfnt_off000085e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85E5	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off000092f7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x92F7	18620 bytes
SHA-256: `20ad8a2126bb9f489cd4862944fdd8c1c01869fd803457c3ce1390bedb89f69f`

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