PDF malware analysis — malicious · 03b136ee7b2d419c

MALICIOUS

PDF

47.7 KB Created: 2021-05-11 20:09:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: c21004aeca2d288bbd8ea533a0d7d683 SHA-1: 2060956a10b24e0ad1d72a6d9f26ee2072c61dea SHA-256: 03b136ee7b2d419cf7510c950661a067f9b8a99f244e40a92e4727ed9fa21645

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple heuristics indicating it's a link farm designed to redirect users to scam websites promising game hacks and free currency. The document body and extracted URLs reinforce this, with a primary focus on 'free hats on Roblox' and 'free Robux'. The presence of numerous external links suggests a malicious workflow aimed at user deception.

Machine Learning

Nyx PDF Classifier malicious score 0.9013

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/how-to-get-free-hats-on-roblox-game-hack PDF link annotation
- https://www.pswpallets.com/uploaded_files/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/minecraft-cheat-client_GM479516143.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/coin-master-hack-tips_GM406889139.pdfIn PDF document text
- https://www.pswpallets.com/uploaded_files/userfiles/files/roblox-free-hair-girl_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
`stream_003_off00004b9a.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B9A	28156 bytes
SHA-256: `5ca91b83d93773d1bd2a9729870316d64ff6129a6cf5a2ad7297e7ac7db8a6d4`
`font_01_sfnt_off00008d82.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D82	2852 bytes
SHA-256: `e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f`
`font_02_sfnt_off00009744.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9744	18444 bytes
SHA-256: `f9b9939c38b76b443be916ca51f6b578d8365b374db70a09f9dd3538b986228f`

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