PDF malware analysis — malicious · 57eb47fa8aeabc15

MALICIOUS

PDF

44.9 KB Created: 2021-05-17 17:52:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: d164b282084e4c565afdbc69c42bd510 SHA-1: 07f134d29e66b4ee1c1639b244e1103a416bbe2a SHA-256: 57eb47fa8aeabc1568046085f8f785c5a713baa37cb9b8f35913f8d0a7f5a5cf

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 0.9632

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/coinmaster-free-cards-game-hack PDF link annotation
- http://paro.net.ua/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/minecraft-cheat-client_GM479516143.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/free-robux-pins_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/free-premium-roblox_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/roblox-script-hacks_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/free-robux-hack_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/minecraft-free-install_GM479516143.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/robux-download_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-daily-free-spins-link-today_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_off00004900.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4900	25560 bytes
SHA-256: `ce55f8fc8de6bf4b51d3e43a59bbb5eb04f380e0b91b6de506147780d397eee7`
`font_01_sfnt_off0000836a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x836A	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00008d55.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D55	18144 bytes
SHA-256: `4e9ac2dffccf12dc152d767ce3e4837f7e1c2082475e153b18622bd7e6b7030e`

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