Malicious PDF — malware analysis report

Static analysis result for SHA-256 feadd62b1a6d9595…

MALICIOUS

PDF

36.4 KB Created: 2021-06-14 00:20:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 0223bdda76ec32f478503d427ed7ff5a SHA-1: dbd967c91951e85e6309f6e1be57a2ccf423aeca SHA-256: feadd62b1a6d9595a95932af781e969ba486701003be0c6e9f02eb1ced32a821
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'Roblox Army Free Robux' and includes a critical heuristic firing for a malicious redirector link pointing to 'http://netcdn.co/app/431946152/roblox-army-free-robux-game-hack'. This suggests the document's primary purpose is to redirect users to a potentially harmful website, likely for phishing or malware distribution. No scripts were extracted, but the presence of embedded URLs and the redirector heuristic strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0292

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 http://netcdn.co/app/431946152/roblox-army-free-robux-game-hack In 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_003_off0000328d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x328D 25084 bytes
SHA-256: 376ade3e01be6ca4d66067aaa8fc6ab2f9f50a90a2cdb031902f2dd50cd70355
font_01_sfnt_off00006c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C14 18528 bytes
SHA-256: 3fb3182e9b0518fecce2d6326c4443e9fc052433b5a2fc23416796f92e2510b3

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