Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca66c488615a0bb3…

MALICIOUS

PDF

37.0 KB Created: 2021-05-21 12:30:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: dc552579d21a44b6810680cd4d08e360 SHA-1: e00dec1f8127c4d693a2eb22f387df54810b25c5 SHA-256: ca66c488615a0bb3f51b5eae1efed2fa25b718015e3efd92a5e9dab75064785e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of 'free Robux' or game hacks. The document body explicitly contains the phrase 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. The embedded URLs are designed to redirect users to potentially malicious sites, likely to download further malware or engage in scams.

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-hack-2021-game-hack In PDF document text
    • http://lewishome.net/images/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://lewishome.net/images/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lewishome.net/images/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • http://lewishome.net/images/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://lewishome.net/images/free-robux-net_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_off0000339b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x339B 25000 bytes
SHA-256: c69049f7bc3646599200bd6beacd708745c6d84a2dd3c3a9a24f00f66574465a
font_01_sfnt_off00006cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD9 19084 bytes
SHA-256: bf126c80224e4ece1a877f3c45a4e2f725662c205f8b78a709aa4c80730d283c

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