Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab5286edf081f269…

MALICIOUS

PDF

33.8 KB Created: 2021-05-21 11:01:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: da371a900d9ace3f2cea9d614d20d80e SHA-1: 647f845949c5ea3f22a953e637afd6d0f71c4363 SHA-256: ab5286edf081f2692afc23ecf4fdf55213c75224211dea7101a28b56fda28261
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising 'free executors for Roblox game hack'. The document body explicitly contains a call to action 'CLICK HERE TO ACCESS ROBLOX GENERATOR' and a URL pointing to a known malicious redirector. This indicates a phishing or scam attempt designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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-executors-for-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_002_off00002c07.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C07 24108 bytes
SHA-256: b6e5f94d3da6ff0669b3cdf2b349baa213cd874b677f0595bb6466fca48ce04b
font_01_sfnt_off0000630b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630B 18192 bytes
SHA-256: 0010e8e9d3b2fa3a2033abb01eb6105ec98c225a2498b2eb90ac9377a6b08ddc

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