PDF malware analysis — malicious · f485d3a5844488a2

MALICIOUS

PDF

36.2 KB Created: 2021-07-09 23:33:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 39071143b484ecca0da20a7979724173 SHA-1: ab4613103d7c9c3c8618ffe84701ff0642366f2e SHA-256: f485d3a5844488a2fdfc0246067085f7771f9c48c659a1ca72fd0f8ac3704780

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 0.9980

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/free-coin-master-generator-game-hack PDF link annotation
- http://www.sarrafoods.com/uploaded_files/userfiles/files/roblox-hack-game_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/tiktok-free-view-easy-verification_GM835599320.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/get-free-robux-info_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-free-download_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/hack-dragon-ball-onliine-revolution-roblox_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/free-robux-hack-trackid-sp006_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/dantdm-free-robux_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/coin-master-heaven-links_GM406889139.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/hacks-de-roblox-descargar_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.sarrafoods.com/uploaded_files/userfiles/files/how-to-unblock-roblox-hack-a-wifi-password-on-computer_GM431946152.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_002_off000036aa.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x36AA	23564 bytes
SHA-256: `2953d5a65baa03d3a840d0050a8e58ef35fddb946b87826ec162ea46b9c6065d`
`font_01_sfnt_off00006c05.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C05	17996 bytes
SHA-256: `1b88821a333356e8c057b37658222f85076d09b756445f32fa695eecd92b46db`

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