Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c75d393512de827…

MALICIOUS

PDF

35.5 KB Created: 2021-05-10 10:57:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 26675c33aca16b1dfa4727100d3065e0 SHA-1: 9c62f4066da7238e9d853ee39ed1cde347c68cd7 SHA-256: 6c75d393512de82726609213b10662ee59c0f0ca92061dcd7650b1539b15bcc8
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically a 'free generator / game hack' lure. The document body and embedded URL reinforce this, pointing to a site offering 'Robux Hack No Verification'. This indicates a phishing attempt designed to trick users into visiting a malicious site, likely to download further malware or engage in fraudulent activity.

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

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/robux-hack-no-verification-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_off00003131.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3131 24100 bytes
SHA-256: b8abe24b446316972d0b761d937c476d80ae0cd0d8a1859b25eaf55d7e2ab263
font_01_sfnt_off00006829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6829 18604 bytes
SHA-256: 770f8f6a3c3ea9ac3c319881d9f8005aae44889e6d1fc0dc42f8814bbcec8619

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