Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7675d7fa8073e12…

MALICIOUS

PDF

36.1 KB Created: 2021-05-14 16:10:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: bcb3232a1a0b7b3f37486a923a505ca1 SHA-1: f6f30c60f259c581aaf67811c271d4ce5f5e506c SHA-256: c7675d7fa8073e12bf3a6a5e81cfe9a50d5f76b60b8db69994c79e9471d43ea1
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link to a known malicious redirector infrastructure, disguised as a game hack generator. This lure is intended to trick the user into clicking the link, which likely leads to a malicious download or further compromise. The document body contains text related to 'Earn Roblox' and the malicious URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0283

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/earn-roblox-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_off00003309.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3309 25088 bytes
SHA-256: c78f399dae1c11bf2e5995fddb09185755a250dbc1b9c8c671bb08e9ff43d3a2
font_01_sfnt_off00006c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5C 18012 bytes
SHA-256: 93bf5a204a867a3cc71fe61d8ba690d7c5ca8a3d58d56ec60b4692a28d6ed968

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