Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5215d62a2fc9ea…

MALICIOUS

PDF

39.8 KB Created: 2021-05-11 09:08:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: e1d2efabc4469aaa038107b58a56c821 SHA-1: 90185e538784382663251d600502788571d09e9d SHA-256: 2e5215d62a2fc9ea554f43ab22666c278637bf296dda9309fba046433caafaf0
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating malicious redirector links, specifically targeting users with a "free generator / game hack" lure. The embedded URL `https://netcdn.xyz/app/431946152/get-me-robux-game-hack` is flagged as a known malicious redirector. The document body also contains text related to "Get Me Robux" and "CLICK HERE TO ACCESS ROBLOX GENERATOR", reinforcing the lure. Although no scripts were explicitly extracted, the PDF structure and link analysis strongly suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/get-me-robux-game-hack In PDF document text
    • https://collectrobuxIn 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
stream_003_off000034a8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34A8 24516 bytes
SHA-256: 1394d3841fff20c4d9560fc8dfdcdbd4b7cc365e1a6a50bb0dd2f58a2dec0709
font_01_sfnt_off00006d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0D 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off00007a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A33 18152 bytes
SHA-256: a45e33870dcdfec4be2d188e583d66387a562064ddf1ebe544b9a56fe2c1f10f

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