Malicious PDF — malware analysis report

Static analysis result for SHA-256 640b897752a13693…

MALICIOUS

PDF

41.0 KB Created: 2021-05-30 02:33:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 82ee0b56214d681bc2c689d6c7233f15 SHA-1: 157740e5e28240dd22ad273151a3c63d7bb02d1e SHA-256: 640b897752a13693859dd8a6cf9726e2b019ba5253aa1f1fcaea650e1a3c28c8
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'Roblox Hack Game' and a 'free generator / game hack' redirector. The embedded link points to a suspicious URL, likely intended to deliver a malicious payload or lead the user to a phishing site. No scripts were extracted, but the PDF structure and embedded links suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0251

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-hack-game-game-hack In PDF document text
    • https://isaf.co.za/wp-content/uploads/fsqm-files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000302c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302C 26560 bytes
SHA-256: f5c57163815440036d23a8da08e82c97bafd58f033f510eb9f3e32d5bc270b4c
font_01_sfnt_off00006dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDE 6932 bytes
SHA-256: 1d3c12ae50aa58b0d7f9edff1f533afe443cfde2247226ed5947ea32ef6b8eb6
font_02_sfnt_off00007ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAD 18440 bytes
SHA-256: ebafd2a9612b8145e5e0fd0fae0a522d36691e15007df27d7d415ea6fce26a90

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