PDF malware analysis — malicious · ce06de54055e1ae6

MALICIOUS

PDF

34.2 KB Created: 2021-06-25 13:52:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 73c75ae3d0aa01739eb6c60265299a01 SHA-1: f85681e46536c6baabc0c2e2f5d096548e474675 SHA-256: ce06de54055e1ae6304fed64b5e20a46d5daaf98701e5923fa2408935e26c79c

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 0.9980

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 http://netcdn.co/app/431946152/free-robux-generator-2021-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/pokemon-go-free-7-day-streak_GM1094591345.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/yyoutube-robux-hacks_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/robux-free-2021_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/pubg-mobile-74-uc_GM1330123889.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-hack-site_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/jailbreak-script_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-with-no-verification_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_off00002f41.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F41	21972 bytes
SHA-256: `16f746886385e1a606974c534c4efe8e6a52497db928127e0e2db861a2a936df`
`font_01_sfnt_off00005ffa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FFA	19224 bytes
SHA-256: `e428ca4c21c8feda58ff9d2cee9e63eb7b19a929803cf1f6eebeef0755d1c14a`

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