PDF malware analysis — malicious · 6fa4fc9bbc296a75

MALICIOUS

PDF

45.1 KB Created: 2021-05-12 11:32:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 36953921dae24b4a46a0a8854039d11a SHA-1: 324be39fb3bdbb242ab4128fa8e500e5c2aeb9b5 SHA-256: 6fa4fc9bbc296a75bdeac5a6b2d56491636df012901b7efb13571e4552551488

200 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a fake CAPTCHA lure to trick users into interacting with a link. The primary link directs to a known malicious redirector infrastructure, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a likely intent to redirect users to potentially harmful content or exploit kits.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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/free-robux-generator-game-hack In PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/coin-master-club-hack_GM406889139.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/make-free-robux_GM431946152.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/coin-master-tool-hack_GM406889139.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/free-minecraft-client_GM479516143.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/get-free-robux-info_GM431946152.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/free-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.e-learning-mas-dailkhairaat.com/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://collectrobux.coIn 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
`stream_003_off00004c29.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C29	28892 bytes
SHA-256: `0f5eab408e412ae74e609210db9c4dec1ec356e778b2b75d99be3e167a654c83`
`font_01_sfnt_off00008dbf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DBF	18344 bytes
SHA-256: `10e3e3d4c68cd560ea953d22ca565409121c707f4baa42eec19ee19970d6ace4`

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