PDF malware analysis — malicious · 8ab70b11496a59ea

MALICIOUS

PDF

49.8 KB Created: 2021-05-13 08:43:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: e6116c9b5bdd8b7bc49f0a05c0883edd SHA-1: 49a601dfb6309d4dd1359e58ed459b0fe8599186 SHA-256: 8ab70b11496a59ea4f79e9370d77792aa415be7741f9553daade75eeeb03b02f

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 0.9349

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/431946152/give-me-free-robux-game-hack PDF link annotation
- http://vagency.us/images/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
- http://vagency.us/images/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
- http://vagency.us/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://vagency.us/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://vagency.us/images/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
- http://vagency.us/images/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
- http://vagency.us/images/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
- http://vagency.us/images/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
- http://vagency.us/images/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
- http://vagency.us/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
- http://vagency.us/images/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
- http://vagency.us/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://vagency.us/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- http://vagency.us/images/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
- http://vagency.us/images/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
- http://vagency.us/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- http://vagency.us/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- http://vagency.us/images/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
- http://vagency.us/images/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
- http://vagency.us/images/robux-game-com_GM431946152.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
`font_00_sfnt_off0000480f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x480F	27004 bytes
SHA-256: `332e4d05b2181db6a86cc7730c3ffa3af6387811cb794b3981b9bc89f240345f`
`font_01_sfnt_off00008514.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8514	8132 bytes
SHA-256: `e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787`
`font_02_sfnt_off0000a000.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA000	18444 bytes
SHA-256: `68319dbf483afe81c5a4de3b3f5290fc223d358c0f75f000dd988daf46eb7eae`

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