Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc53905dac33e4d3…

MALICIOUS

PDF

37.4 KB Created: 2021-05-23 14:45:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b6752df5101f474f464aa9d3d6046181 SHA-1: a00e8a4b611a8504fc407e276f61fee195552a0f SHA-256: cc53905dac33e4d3e5c20f380bf6f03805571d0ec8a2cbbb2bd6d07c9d36126a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, masquerading as generators or hacks for popular games like Roblox and Coin Master. The primary link, https://netcdn.xyz/app/431946152/how-to-get-free-robux-for-kids-game-hack, is flagged as a malicious redirector. The document's content and embedded links strongly suggest a phishing or malware distribution attempt, likely using a spearphishing attachment vector. No scripts were extracted, but the heuristic firings indicate malicious redirection and a lure for game-related cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-robux-for-kids-game-hack In PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • https://www.franchiseinnovations.org/broker-site/files/files/how-to-hack-roblox-jailbreak_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003475.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3475 25512 bytes
SHA-256: b691a27ff39e7d54f3d36a313eeb977bb37a390620b2ceed13309b2cad9464c2
font_01_sfnt_off00006ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF8 18576 bytes
SHA-256: d8259766cf036cd113d0b26237eaaf1c704bfb1290fa2ba3336ef80e6ae93167

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