PDF malware analysis — malicious · 115e8ce40844c3cc

MALICIOUS

PDF

39.2 KB Created: 2021-05-25 11:31:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25

MD5: 77a9946ef82384546e7e984714ea3b56 SHA-1: b3df4db074f469306b6469fc3e16da32a62e9e34 SHA-256: 115e8ce40844c3cc29af90b405990359dc4bae60ccfc6141107bfe48fe935959

168 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'free generators' and 'game hacks' for popular platforms like TikTok and Roblox. The document body explicitly contains a call to action to 'CLICK HERE TO ACCESS TIKTOK GENERATOR' and points to the URL https://netcdn.xyz/app/835599320/free-tiktok-likes-and-followers-game-hack. This indicates a social engineering lure designed to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.8060

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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/835599320/free-tiktok-likes-and-followers-game-hack In PDF document text
- https://c2o-library.net/catalog/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
- https://c2o-library.net/catalog/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://c2o-library.net/catalog/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
- https://c2o-library.net/catalog/repository/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
- https://c2o-library.net/catalog/repository/roblox-free-hats_GM431946152.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_002_off000030ce.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x30CE	27084 bytes
SHA-256: `7fb365a92efcf75241c7f7f3c1598f1d8c62a5ca49ae5abb6f792e12d615a4e2`
`font_01_sfnt_off00006f36.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F36	2892 bytes
SHA-256: `5e0712ca08337fb3b2e5736ec787a8b2ab1b9b6f3706f0b029d23afe08e6a7a6`
`font_02_sfnt_off0000791b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x791B	17868 bytes
SHA-256: `d80a5b590fc1f536f9a9d288da246cac59e10184b672ed9828d0991e5480315e`

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