PDF malware analysis — malicious · fa2374d5b9dc145b

MALICIOUS

PDF

34.6 KB Created: 2021-06-18 21:45:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: df8b03fe1aaf2ed60089c4300e2e9a70 SHA-1: 94ef56fd3bd223c8918f133fa44d173e7ea372c8 SHA-256: fa2374d5b9dc145b95d27be98f3df47ab1b3a05f6e0ff99e9fe4162a9f2bbea5

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'game hacks' and 'free generators' for popular games. The primary redirector URL is http://netcdn.co/app/431946152/como-hacer-un-hack-para-roblox-game-hack, which is associated with malicious redirector links. The document body and embedded URLs reinforce this lure, aiming to trick users into downloading or visiting malicious sites. No scripts were extracted, but the PDF's structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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.co/app/431946152/como-hacer-un-hack-para-roblox-game-hack In PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-get-money-in-roblox-cheat-engine_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/easy-robux-com_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-hack-bytecoin-mining-simulator-roblox_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/roblox-hack-build-you-one-boat_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/roblox-verification_GM431946152.pdfIn PDF document text
- https://www.iosas.info/uploaded_files/userfiles/files/minecraft-apk-android-free_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_off00002fb4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FB4	22552 bytes
SHA-256: `982b2e48962bc90a8e42253e195e421d7eb65d074dd68870f1f0e25ef19e1923`
`font_01_sfnt_off00006210.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6210	19072 bytes
SHA-256: `21434562823623b78c7c0989ebe6458b66ca35ddf0edfc624ef47cde99273e3e`

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