PDF malware analysis — malicious · 374e993755700416

MALICIOUS

PDF

48.3 KB Created: 2021-06-03 12:07:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12

MD5: 96d4d69774dcb3d88a28f084ffd33bb5 SHA-1: 90234f9165bc4fd6fc63a59956708a863e739abf SHA-256: 374e993755700416a55634a43e269b3c5829484a5f3b6b5b6235c2419ceba435

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising "free generators" and "game hacks" for popular games like Roblox and Minecraft. The primary lure URL is https://netcdn.online/app/431946152/roblox-hack-unlimited-robux-game-hack, which is designed to trick users into clicking through to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly indicate a phishing or scam attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.online/app/431946152/roblox-hack-unlimited-robux-game-hack In PDF document text
- https://www.insol-europe.org/uploads/files/files/free-minecraft-website_GM479516143.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/get-more-robux_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-link-spin_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/roblox-sexually_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.insol-europe.org/uploads/files/files/coin-master-free-spins-link-blogspot_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_004_off00005245.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5245	26288 bytes
SHA-256: `e3cc236e9f37385dcf986c583288e9c500005a8375b21875a64bcab1d9799cd7`
`font_01_sfnt_off00008d24.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D24	2816 bytes
SHA-256: `4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f`
`font_02_sfnt_off00009735.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9735	19168 bytes
SHA-256: `c229ae85f225584a05b8ae3a5d05ef5eb919d65508796bcf435d04f59e516df3`

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