PDF malware analysis — malicious · ba16ac387c29222f

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 12:02:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: af89a838a316a8c403a0c699f94a3495 SHA-1: 71484ddcc5f520643a622f99e93c4a3ba50d0e49 SHA-256: ba16ac387c29222ff50629b52048ff5c63c01451de7b523d96e4e12d34740998

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded URLs that lure users with promises of game hacks and free generators, such as 'today-coin-master-spin-free-game-hack'. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a download button lure reinforces the malicious intent. The document likely serves as a phishing or scam lure, directing users to potentially malicious websites.

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/today-coin-master-spin-free-game-hack PDF link annotation
- https://silvterie.com.br/images/ckfinder/files/hack-roblox-jailbreak-2021-download_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/reddit-hack-roblox_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/ok-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/get-free-roblox_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/how-to-hack-roblox-with-javascript_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/free-robux-no-email_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/roblox-robux-giver-free-download_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/free-robux-cards_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/free-robux-real-working_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/how-to-hack-games-in-roblox-on-ios_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/roblox-area-14-hacking-script-pastebin_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/riot-police-roblox-free_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/roblox-free-stuff-for-girls_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/boku-no-roblox-remastered-free-account_GM431946152.pdfIn PDF document text
- https://silvterie.com.br/images/ckfinder/files/free-coin-master-spins-2021-link_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_off0000342a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x342A	22548 bytes
SHA-256: `a81edc9df446f6dec1806e58d243f16326fcfb6e3da3efd2a335f21b384a69e0`
`font_01_sfnt_off00006643.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6643	18528 bytes
SHA-256: `e2ba7301b642d01bbb1534f76a73ee61ba5af41067a1fa1e156a956a78038ecf`

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