Malicious PDF — malware analysis report

Static analysis result for SHA-256 302f5c716237c59d…

MALICIOUS

PDF

40.2 KB Created: 2021-05-12 09:20:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: a89fd8dd602d1a3d45edb0206e3cd9d9 SHA-1: fe5e39afd3d95ba6f69e295fb95b9c5c6f933dd0 SHA-256: 302f5c716237c59d7c088d7d77294966ed208ac0dc6f34d7ed5e325a8f385c15
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector lure, specifically linking to a 'free generator / game hack' for Roblox. The embedded URL directs to known malicious infrastructure. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or scam attempt to redirect users to a potentially harmful site.

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/how-to-get-free-roblox-items-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
stream_003_off0000363d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x363D 25548 bytes
SHA-256: 54d11dc3588f1011482401cd3e939f2d23347b1980cec502bd623b1e63ab8c63
font_01_sfnt_off000070fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70FC 2880 bytes
SHA-256: 7024e498a1044ab716c78b5298616e5e9941af76be8b38e364c70165fcc26c0e
font_02_sfnt_off00007adc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADC 18476 bytes
SHA-256: 8f186cfffdac824b8af051e9c3258ff2c6bc2a624daaf9438b2e2390608ff8bc

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