PDF malware analysis — malicious · a2033ab08ce1fe0c

MALICIOUS

PDF

36.9 KB Created: 2021-06-19 22:04:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: c2b328955ec872d3700aa9d76275c05b SHA-1: d78dd75613452b2e313d62cd32765c4e8a196c7e SHA-256: a2033ab08ce1fe0c40a5a5569ca96b28c43cb6d620a75425d6ed45f5cb3c14df

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to entice users. It contains multiple links, including one to a known malicious redirector at http://netcdn.co/app/431946152/5-games-that-actually-give-you-free-robux-game-hack. The document also functions as a link farm, directing users to numerous other PDF files hosted on trendsfashionusa.com, likely for SEO manipulation or further redirection. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a phishing or scam attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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
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/431946152/5-games-that-actually-give-you-free-robux-game-hack In PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/pubg-uc-whatsapp-group-link_GM1330123889.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-roblox_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/cheat-roblox-dll_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-hack-robux-2021_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-hack-with-cheat-engine-64-on-roblox_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-roblox-toy-codes-2021_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/free-robux-and-tix-online_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/nisterv-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
- https://www.trendsfashionusa.com/uploaded_files/userfiles/files/is-minecraft-education-edition-free_GM479516143.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_off000035ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x35AC	22804 bytes
SHA-256: `2b07dcf078417708cebcf0d76582937406ef05684bae2eda25c5508b2d8a389d`
`font_01_sfnt_off000068a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68A3	20028 bytes
SHA-256: `c381cac835900b46f5d6448a9fc8e3ffdfff66602e5ff226f61c5aa0add6fc1a`

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