Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed66a5c871e4dcc…

MALICIOUS

PDF

37.0 KB Created: 2021-05-21 02:10:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 8f3744740e5acd73caaefa15a118eb01 SHA-1: 0f9d36a714e7caf10ccc54d4523821c2e70762e4 SHA-256: 3ed66a5c871e4dcc5f7c934c56e89b0d5fb4c2fb404419c3dbc8451ca150e953
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, disguised with lures like 'Free Robux Script' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR'. The ML classifier also flagged the document as malicious. These findings indicate the document's primary purpose is to redirect users to malicious websites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/free-robux-script-game-hack In PDF document text
    • http://badboybiteaway.de/images/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/robux-prices_GM431946152.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.

FilenameKindSourceSize
stream_002_off00003113.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3113 26840 bytes
SHA-256: e0f574a0bd4f4c975e0be3a5894c3de22409d9f476ef4cd1014a5125f05eb767
font_01_sfnt_off00006ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE1 18416 bytes
SHA-256: 7904477eb6282cb79bb1f8d95588be1a5283b3abf5667e30a4d761915d4b26ef

Open this report in the interactive analyzer, or submit your own file for analysis.