PDF malware analysis — malicious · e5328e22fff34424

MALICIOUS

PDF

45.5 KB Created: 2021-05-20 00:13:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 34d5d89f0025036ac1aaedbdb358f351 SHA-1: eaba5018187e2ce8d5e32961c93ac7e9f106f5b6 SHA-256: e5328e22fff34424d2d5c65fd2b7daa6b9dfd1320ae7a1c27d56f972c4084d2c

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free Robux and game hacks. The primary malicious link, https://netcdn.xyz/app/431946152/microsoft-free-robux-game-hack, is identified as a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious websites, likely for further exploitation or phishing. The document's content and heuristic firings strongly indicate a social engineering tactic to compromise users.

Machine Learning

Nyx PDF Classifier malicious score 0.9507

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.xyz/app/431946152/microsoft-free-robux-game-hack In PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/roblox-hack-game_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/free-robux-obby_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/grabpoints-robux_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/www-rubux_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/coin-master-village-3_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
- https://www.markettraderacademy.com/uploaded_files/userfiles/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
- https://www.bandicam.comIn 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_off00004ada.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4ADA	24848 bytes
SHA-256: `4067821b8fdc8c6e5b59b480cbb156dda4c1f602eeabc6cdd5c2695564dba50c`
`font_01_sfnt_off000083bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83BB	3400 bytes
SHA-256: `4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07`
`font_02_sfnt_off00008ee5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8EE5	18436 bytes
SHA-256: `fc8058b2753a804d67589ad9e7736472a77fa92b8b7356ad3bc1ab00ed4087a5`

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