PDF malware analysis — malicious · 28d7a5a854fd9798

MALICIOUS

PDF

33.1 KB Created: 2021-07-20 01:35:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 278d61ed4254abb0c051badd03cb3233 SHA-1: e6e2f48dd458914c7bfd9e98d4844bf00b0b9b2b SHA-256: 28d7a5a854fd9798a805c5324cfea252562feb2c3faef4475357aac602b7470b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase designed to trick users into visiting a malicious redirector. The primary lure is for 'free Minecraft Alt Accounts' and 'game hacks', directing users to http://netcdn.tw/app/479516143/free-minecraft-alt-accounts-game-hack. This infrastructure is known to host malicious content, and the document's structure suggests it's part of a phishing or scam campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9900

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/479516143/free-minecraft-alt-accounts-game-hack In PDF document text
- https://lesegais.ru/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
- https://lesegais.ru/images/free-robux-co_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/free-tiktok-comments_GM835599320.pdfIn PDF document text
- https://lesegais.ru/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/how-to-get-hacks-on-roblox_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_off00002cbc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2CBC	23060 bytes
SHA-256: `fab557dfd0f5ae15e77797bf58a88a8622ec2aaa0407c5279625c1483d43fc48`
`font_01_sfnt_off000060c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60C9	17924 bytes
SHA-256: `ca2704b96dad28857c40796bc5f3f160f1252a4638d6e656e043cddf4ab01458`

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