PDF malware analysis — malicious · 99d0c7ac7ce3e52c

MALICIOUS

PDF

33.8 KB Created: 2021-07-03 12:12:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 31aa888f280f7b75214fe4741a20ac9a SHA-1: 11d42bb3d9f64dd8d77e6ef76349a8a99797f45d SHA-256: 99d0c7ac7ce3e52c42beefefd00d04694a05a632e821cae3a6bacbe448ec11b6

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-coins-and-spins-game-hack PDF link annotation
- https://affinityinsure.ca/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/free-robux-no-email_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/roblox-free-roblox_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/free-money-links-coin-master_GM406889139.pdfIn PDF document text
- https://affinityinsure.ca/files/give-free-robux_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/free-robux-place_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/robux-2021_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
- https://affinityinsure.ca/files/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
- https://affinityinsure.ca/files/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
- https://affinityinsure.ca/files/coin-master-ad_GM406889139.pdfIn PDF document text
- https://affinityinsure.ca/files/earn-robux-sites_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://affinityinsure.ca/files/hack-roblox-apk-pc_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/invisibility-hacks-roblox_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/when-does-roblox-librity-county-come-out-free_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/roblox-free-1m-robux_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/how-to-cheat-in-strucid-roblox_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://affinityinsure.ca/files/easy-way-to-get-free-robux-2021_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
`font_00_sfnt_off00002f4e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F4E	22380 bytes
SHA-256: `58b05b016576bbe7940471f2d62b66fe360ad1cdcd62a512efead6a5e0d14247`
`font_01_sfnt_off00006121.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6121	18348 bytes
SHA-256: `cc12283f691ecd9c6c4381c5355a15c3235cfa1ea9601b68c1f91d3883d88a7b`

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