Malicious PDF — malware analysis report

Static analysis result for SHA-256 271a746dcddc124a…

MALICIOUS

PDF

37.3 KB Created: 2021-05-17 23:01:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 691556bddc51fcfe07d2665d18a70c34 SHA-1: 7c680bf4c9863d65ce4f443cdfde16d761f991fc SHA-256: 271a746dcddc124a9fed468de3786a332b20cb56ce4515b313b0b750ef29e0c9
130 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to a malicious URL, masquerading as a 'free generator / game hack' for Roblox. The document body explicitly mentions 'Roblox Com Free Robux' and includes a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR'. This indicates a phishing or scam attempt designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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-com-free-robux-game-hack In 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003287.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3287 27380 bytes
SHA-256: 0c808a0b873f60cbf689fad38f92574476f45aaed603182fd3eb2e61b70a5b87
font_01_sfnt_off0000707e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x707E 18348 bytes
SHA-256: c296ce3e2e2a101d3e2a91d968c24b195b6c9a3a72cf9c6f74fe8dc429b2d5e3

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