PDF malware analysis — malicious · cb882d9537fddcaa

MALICIOUS

PDF

53.4 KB Created: 2021-06-09 04:14:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: f56bd25f295eea1c21d00abdadf2c413 SHA-1: c78a1b2b3f80410b8888632971b79f05b98b5731 SHA-256: cb882d9537fddcaa145e62cfead84d7c6cd14258073bf0e7a366a7162cc3d2f2

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a game hack download, which is a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious content, likely for further exploitation or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9577

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 https://netcdn.tw/app/431946152/roblox-prison-life-hack-download-game-hack PDF link annotation
- https://vieclamjapan.com/upload/files/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/pokemon-go-free-download_GM1094591345.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/watch-videos-for-robux_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/toolbox-premium-apk_GM479516143.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/robux-miner_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/coin-master-free-fire_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005131.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5131	27520 bytes
SHA-256: `295722f210b08664fbf346f3cc7c2f6e440ffaf713c5f0635a71c06162e9cd8e`
`font_01_sfnt_off00009082.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9082	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00009a68.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A68	7272 bytes
SHA-256: `f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924`
`font_03_sfnt_off0000abd9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xABD9	18960 bytes
SHA-256: `e8c8a472e6f9752c658ad67934174bebb21ad8bdc006fe4512c2b7ade1c9b373`

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