Malicious PDF — malware analysis report

Static analysis result for SHA-256 0700e0691ce3bdf5…

MALICIOUS

PDF

35.7 KB Created: 2021-05-14 22:32:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f6bbeb5fd9a7a9d116a07f21e0385ac9 SHA-1: 53480f2ffedfe94c39ca71ca1986c99efdceef88 SHA-256: 0700e0691ce3bdf599d745023af61370901c20c9670263e23ac773d01bcd02b4
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a malicious redirector link, specifically advertising a 'free generator / game hack'. The embedded URL, https://netcdn.xyz/app/431946152/free-roblox-hack-us-game-hack, is identified as a malicious redirector. The document body also contains text related to 'Free Roblox Hack Us' and a call to action to access a generator, reinforcing the lure. While no scripts were explicitly extracted, the nature of the PDF and its embedded link strongly suggests an attempt to trick the user into downloading a malicious payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0282

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-roblox-hack-us-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_off00003153.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3153 24480 bytes
SHA-256: 04bc8dbd596c70bab9d48f1dace3b7098f8a7cd0972550cd7eb836fe6b9482e3
font_01_sfnt_off0000696a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696A 18532 bytes
SHA-256: 0d34e375d8902d3efa285fd24fab142d003833d4205c7dc9a730d4d831678389

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