PDF malware analysis — malicious · f3751bb71c7b720e

MALICIOUS

PDF

41.1 KB Created: 2021-05-14 11:24:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: a6a83f7d92b8a87c31e4c8ce9a49a69a SHA-1: c2cca804806d18c79d776096195d0e6ae7014cb8 SHA-256: f3751bb71c7b720e6cc3f067b699438a331b05448a21bc7687b703384a5313ee

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-free-coins-and-spins-app-game-hack PDF link annotation
- http://agrao.in/images/free-robux-reddit_GM431946152.pdfIn PDF document text
- http://agrao.in/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- http://agrao.in/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
- http://agrao.in/images/coin-master-hack-software_GM406889139.pdfIn PDF document text
- http://agrao.in/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
- http://agrao.in/images/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
- http://agrao.in/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
- http://agrao.in/images/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://agrao.in/images/minecraft-images-free_GM479516143.pdfIn PDF document text
- http://agrao.in/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
- http://agrao.in/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
- http://agrao.in/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
- http://agrao.in/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://agrao.in/images/minecraft-116-free_GM479516143.pdfIn PDF document text
- http://agrao.in/images/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://agrao.in/images/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
- http://agrao.in/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- http://agrao.in/images/roebucks-on-roblox_GM431946152.pdfIn PDF document text
- http://agrao.in/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
- http://agrao.in/images/coin-master-apk-hack-download_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
`stream_003_off000047b3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x47B3	24136 bytes
SHA-256: `515ec1d4cae903a69fffa49adaa4d5d8ef82217e04260e404e3cee78d7bd6fe3`
`font_01_sfnt_off00007ecc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7ECC	18060 bytes
SHA-256: `f77ee24e01944806ea28e16fd73427a54f7109e241804df06ce657d8c6d11cfb`

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