Malicious PDF — malware analysis report

Static analysis result for SHA-256 c86970efb4536792…

MALICIOUS

PDF

40.1 KB Created: 2021-04-27 11:55:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7448b39c20c87c9ac25fda18a7eb6979 SHA-1: 86e8da09bd2930a49c6351a5bd289e23392e91d9 SHA-256: c86970efb45367927132b4581415a58f44bcca8d666384fc9f3db9d80f5ef638
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and text lures related to Roblox game hacks and free Robux, directing users to malicious domains. The heuristic firings confirm these links point to known malicious redirector infrastructure. The document body, though partially corrupted, also contains references to these lures and malicious URLs, indicating a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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-flood-escape-2-hacks-game-hack In PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-cheat-engine-wall-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-make-a-roblox-hack-using-hxd.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-hack-account-real.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-cheat-engine-download-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-free-hair-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hacks-to-get-free-robux-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/bhop-hack-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-roblox-toy-codes-december-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-doge-head-on-roblox-for-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-robux-generator-survey.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
font_00_sfnt_off00003e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E35 26096 bytes
SHA-256: 66afa52219e55b92f520ef1e40d156c638993cc50b86c8551ea86b308c2477f8
font_01_sfnt_off00007950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7950 18820 bytes
SHA-256: ec901f39eea9d5c6600e4101a0952c1e73cd00e9eb10306de78f007da17f6e8f

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