Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf8c74d2f3d2a01…

MALICIOUS

PDF

40.6 KB Created: 2021-05-10 22:49:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 27b204283d047387a3f23832a37322c8 SHA-1: da5272bc3820b4e62040a15d87e131a7725a477d SHA-256: eaf8c74d2f3d2a016e52b0ef0ba5fb637022d9d16f90a87c4350ecbd275cdcc5
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising a "Roblox Account Taker" and "game hack". The presence of a call-to-action button and the nature of the lure suggest an attempt to trick users into downloading or executing further malicious content. While no scripts were explicitly extracted, the PDF structure and malicious links indicate a phishing or social engineering attack.

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/roblox-account-taker-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_off0000330b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x330B 26108 bytes
SHA-256: 5603cf75d32233b8174a83ab5679fdfa9032d9574e2dd95c2e80eb48cea4f2b3
font_01_sfnt_off00006fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAB 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007cbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBC 18428 bytes
SHA-256: a45c208a7567f3e6804dce25d11280ac896a92182563dc04cbc3a4f5e023aa05

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