PDF malware analysis — malicious · cfa6b163f03d6c47

MALICIOUS

PDF

34.1 KB Created: 2021-07-07 13:04:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 181344ffc7d9b3f32860ddcaa4cad980 SHA-1: 1bb6be04f41c4a0f7ca48408d2022d7aba926b02 SHA-256: cfa6b163f03d6c47a4ba5dff8137f515d97b608107d0c34cbb22c332087792f2

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links, including one identified as a malicious redirector leading to a 'free generator / game hack' lure. The document body and extracted URLs reinforce this theme, suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure indicate a likely attempt to direct users to malicious websites, potentially for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

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.
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.tw/app/431946152/how-to-get-free-robux-with-fake-credit-card-game-hack In PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-tiktok-app_GM835599320.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-roblox-gfx-artists_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-polo-ralph-lauren-free-shirt_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-roblox-clothes-on-phone_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-get-free-robux-by-playing-meep-city_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-money-cheat-codes-xbox-one_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/fake-hacker-on-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-get-robux-in-roblox-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-game-download-free_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-vip-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-money-hack-2021-free-download_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-2021-july_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-roblox-purchases_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/robux-free-codes-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/robux-hack-v1-0_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-hack-unlimited-robux-download_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_off00002eb5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EB5	21744 bytes
SHA-256: `bbfd5c3b4a972fd33fe1c6b581c22d31ec4e24ab761955b5619820a27c56ec01`
`font_01_sfnt_off00005e9f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E9F	19628 bytes
SHA-256: `2e6fab66862009b6366db935ad443ccb73a7a63060b29020c90969d7c2fdec64`

Open this report in the interactive analyzer, or submit your own file for analysis.