PDF malware analysis — malicious · 7bf4a12275554346

MALICIOUS

PDF

35.0 KB Created: 2021-07-19 08:15:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 24805a377fe03288d260fad9aa287d53 SHA-1: e98e9d8b393f707622e197253bf16565c5f700e6 SHA-256: 7bf4a122755543464d45f9b6c9c0e241b40528817f4da63c7ad520766fd39cc1

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary link pointing to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for "free game hack" or "free robux" content, designed to entice users to click through to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to a second-stage payload or phishing page.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-free-game-hack In PDF document text
- https://www.manisoft.ir/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
- https://www.manisoft.ir/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.manisoft.ir/images/tiktok-viewer-free_GM835599320.pdfIn PDF document text
- https://www.manisoft.ir/images/free-robux-easy_GM431946152.pdfIn PDF document text
- https://www.manisoft.ir/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://www.manisoft.ir/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
- https://www.manisoft.ir/images/www-free-robux_GM431946152.pdfIn PDF document text
- https://www.manisoft.ir/images/robux-free-2021_GM431946152.pdfIn PDF document text
- https://www.manisoft.ir/images/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
- https://www.manisoft.ir/images/free-minecraft-resource-packs_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_off000032e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32E1	23720 bytes
SHA-256: `6492baca12f1058e3f7c2984b9e8c0bdbfc63adf8a5fa0dfc2cf951fc658f906`
`font_01_sfnt_off000068b3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68B3	17712 bytes
SHA-256: `0afd6f2792edb83b7f2a0201a1e0a5eb12ca81ad868fb3e42742340ee6e5fb0e`

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