Malicious PDF — malware analysis report

Static analysis result for SHA-256 ece65e8902e631d3…

MALICIOUS

PDF

40.6 KB Created: 2021-05-14 16:47:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 303fe1b82e703b3c24f2578ed916b405 SHA-1: 12c572444427f6dbcd2cdfcacbaf2cfbbf742b3a SHA-256: ece65e8902e631d3a90e359c3d5ce06ed3a5cc8b9765de0776310afdf05e6bbb
130 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to a known malicious redirector infrastructure, specifically advertising a 'free Robux' generator or game hack. This indicates a social engineering lure designed to trick users into visiting a malicious site, likely to download further malware or engage in credential harvesting. The document body and heuristics confirm the deceptive nature of the content.

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/free-robux-easy-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003054.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3054 27548 bytes
SHA-256: 3fc76504a426bd218326b761a897e7f151e318172ef7219be7c887317a705484
font_01_sfnt_off00006fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB3 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007cc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC4 18420 bytes
SHA-256: 93fb4fe90c413bceeeea5373daaca89ae05c83417e443247d622c1bd09cfd34e

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