PDF malware analysis — malicious · 39e6cfa52cad5226

MALICIOUS

PDF

33.2 KB Created: 2021-07-19 22:12:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 41d5b59ebc472bde26df35afdbd38624 SHA-1: 61c85d2b062e30e3c1c8e53dc184a289f1f39c14 SHA-256: 39e6cfa52cad522677a676b8d1bfa58a1d03ccdfb7ff14dc1d342af95950c4b7

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free Robux or game hacks. The primary link directs to a known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious websites for further exploitation or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

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-2021-easy-game-hack In PDF document text
- https://goodtools.tw/upload/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
- https://goodtools.tw/upload/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
- https://goodtools.tw/upload/files/free-robux-without-doing-anything_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_off0000292e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x292E	22824 bytes
SHA-256: `4a481a7dab718cc9db9cf682e27d3a782dc8915c7c046a2add5c9d4976505c5e`
`font_01_sfnt_off00005c58.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C58	19276 bytes
SHA-256: `7a8e0f0464ba8cbc7cdc9f98d62ba35f68a868c8d4001ab84d520415c4362a38`

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