PDF malware analysis — malicious · eb2aeed4994de876

MALICIOUS

PDF

33.2 KB Created: 2021-07-19 11:53:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 6754c5d051a6ceaa5b9167c1b6ecf2fb SHA-1: 56c38771a8c903d5ca7f6cf58f8ffa31a0ac1bad SHA-256: eb2aeed4994de876be92a853d23215929f0ee151fa39c45f6cfd7ca252728154

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency and hacks, directing users to a known malicious redirector. The embedded URLs and document body content strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious workflow, likely involving redirection to exploit kits or further phishing pages.

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/free-robux-no-verify-2021-game-hack In PDF document text
- https://magistrinfo.ru/images/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
- https://magistrinfo.ru/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
- https://magistrinfo.ru/images/robux-com-free_GM431946152.pdfIn PDF document text
- https://magistrinfo.ru/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://magistrinfo.ru/images/free-tiktok-likes_GM835599320.pdfIn PDF document text
- https://magistrinfo.ru/images/minecraft-account-hacked_GM479516143.pdfIn PDF document text
- https://magistrinfo.ru/images/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
- https://magistrinfo.ru/images/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
- https://magistrinfo.ru/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
- https://magistrinfo.ru/images/free-tiktok-followers-app_GM835599320.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_off00002c57.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2C57	22120 bytes
SHA-256: `ec3e5c0cd9e7857bb4bed1b5db63772e4b35bd88b93bd8e8b8c5b5863d3a6acd`
`font_01_sfnt_off00005d78.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D78	19036 bytes
SHA-256: `c34bf7a65760171f34da3f69298eb915a2c7f2acfe0422042ed48294a4c22706`

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