PDF malware analysis — malicious · 329ef762c6347207

MALICIOUS

PDF

48.2 KB Created: 2021-05-14 11:34:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: e9b662322bdfbf57692c12e0ad544f36 SHA-1: 23f69d7dd4a84e636ee2b1c60ed7389b2c2f301d SHA-256: 329ef762c63472071cfa8c1c1ffda899194b0212d05927bfec5f7fec8ce98d7d

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a malformed stream and links to known malicious redirector infrastructure, specifically promoting a 'free Robux' generator. The document body and embedded links suggest a social engineering lure to trick users into visiting malicious sites. While no scripts were directly extracted, the PDF's structure and heuristic firings indicate it's designed to exploit users through deceptive links.

Machine Learning

Nyx PDF Classifier malicious score 0.9344

Heuristics 5

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.
Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH

A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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 https://netcdn.xyz/app/431946152/easy-way-to-get-free-robux-game-hack In PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/bad-minecraft-free_GM479516143.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/coin-master-pro-hack_GM406889139.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/easy-robux-hack_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/free-robux-gen_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
- https://daring.mtsn7sumedang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004a74.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A74	26168 bytes
SHA-256: `c1ccefa13460d75b3498be6ede741757cd8e81f8902b9e8b8f3cca625fdeeba6`
`font_01_sfnt_off000086df.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86DF	7448 bytes
SHA-256: `a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90`
`font_02_sfnt_off000098c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x98C2	18724 bytes
SHA-256: `ff2b5f5648817baecf5754646eae61914eefadf3856a555e8e6cbc13d6b08405`

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