Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc675b45fd16720f…

MALICIOUS

PDF

34.5 KB Created: 2021-05-12 00:43:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 040016f488668a62ca650d9f602689a5 SHA-1: 3232357b172bbd1cfe22b1f83c8692f2aed8b85b SHA-256: dc675b45fd16720fb54e71f2b1be01ec40da7d1eac058ab55fabcba59881889e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a 'free generator / game hack' which redirects to a malicious URL. The document body, though partially garbled, contains text related to 'I Robux' and 'Roblox Generator', reinforcing the lure. The embedded URL is known to be associated with malicious redirector infrastructure, suggesting the file is designed to lead users to potentially harmful content or downloads.

Machine Learning

  • Nyx PDF Classifier clean score 0.0080

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/i-robux-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000235b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x235B 24416 bytes
SHA-256: 36bd98d2063059e6060e48dabd24660a519ce588dc6b5b4171c89758b690effb
font_01_sfnt_off000059f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59F2 4660 bytes
SHA-256: b8980cdac4d025496d9fe039d8c05bb5b9bae1b804244a1f9c05e9663db72816
font_02_sfnt_off00006a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A02 16796 bytes
SHA-256: 1908ad0001317b561df4e8a327ca3f484dbb98252e71155ac1982695499aff00

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