PDF malware analysis — malicious · 3b20f2de8f3440a2

MALICIOUS

PDF

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

MD5: d498443f9de6fbe5bcb73cb2b212253b SHA-1: aa1fddba27b8ec0ee182f633a68f6a17257eb6f0 SHA-256: 3b20f2de8f3440a26fb6fd531db2bc9396463ba85811026a44d8151fa63074f0

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/431946152/free-robux-codes-generator-game-hack PDF link annotation
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/hack-para-atravesar-paredes-rn-roblox_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-curse-on-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/roblox-piano-hacks_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/roblox-cheat-engine-how-to-give-yourself-a-gear_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-ka-tik-tok_GM835599320.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-roblox-redeem-cards-2021_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021-youtube_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/roblox-robux-hack-jailbreak-ios_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/rbx-sites_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/is-coin-master-free_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
- http://www.marvelorlubricants.com/uploaded_files/userfiles/files/free-spins-coin-master_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_off000031e4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31E4	22004 bytes
SHA-256: `442357c25ec2d55b4be409b9de15fe4a7a5a3a47d8e1d2b61f06551dfeea9a41`
`font_01_sfnt_off000062a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62A4	18996 bytes
SHA-256: `5eb0e14e84a96ce31996bcd37de003c05f35194690cf7e19bda56cbb05988c9f`

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