PDF malware analysis — malicious · 23283de10894b2e4

MALICIOUS

PDF

32.0 KB Created: 2021-07-19 13:23:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: db083713b43c8b85e79ee67d4bf9f032 SHA-1: a2a5a297fa0733959357f855e10eb1404222edc4 SHA-256: 23283de10894b2e4a9b2b1e21c583b04d1238d72bd2cd4b45bc49318415e7042

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to a malicious domain, likely intended to trick users into believing they can obtain game-related benefits. The document's content and embedded links strongly suggest a social engineering lure, aiming to drive traffic to potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9936

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/claim-free-robux-game-hack In PDF document text
- https://elearning.manbinjai.com/__statics/gudangsoal/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
- https://elearning.manbinjai.com/__statics/gudangsoal/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
- https://elearning.manbinjai.com/__statics/gudangsoal/files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- https://elearning.manbinjai.com/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://elearning.manbinjai.com/__statics/gudangsoal/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://elearning.manbinjai.com/__statics/gudangsoal/files/minecraft-login-free_GM479516143.pdfIn PDF document text
- https://elearning.manbinjai.com/__statics/gudangsoal/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
- https://elearning.manbinjai.com/__statics/gudangsoal/files/free-minecraft-java-edition_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_off00002879.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2879	22172 bytes
SHA-256: `6601b03e039cfea02c45bddcb4ef6b102dfccfa7d48ea8bd69a28e593230f528`
`font_01_sfnt_off00005967.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5967	18884 bytes
SHA-256: `ae76db074a4b7bd0cf2df4b3c3d771d873f937dbbe8778acf7ef920e6df55ea5`

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