Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d001573cf2e3045…

MALICIOUS

PDF

36.3 KB Created: 2021-05-20 13:02:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1429c945d2bd14d5f6ba27cc192c463f SHA-1: d102480ce5bdbf31deea9e2b4f2774b4cd09a7d4 SHA-256: 4d001573cf2e3045dbf3a6f0fed46e0ba9a85a1b3d5c8b62143ade9e7e360a15
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, luring the user towards a "free generator / game hack" website. The primary malicious URL identified is https://netcdn.xyz/app/431946152/roblox-free-rubox-game-hack, which is likely a redirector to a further malicious payload or phishing page. The document body also contains obfuscated text and other URLs that point to similar game-related lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-free-rubox-game-hack PDF link annotation
    • http://daskrimti-jabar.web.id/library//repository/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000322a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322A 25576 bytes
SHA-256: bb43313ef85c1e1a4a28c539980fdbaa4633f4369bc330002cc2945cc5ac33dc
font_01_sfnt_off00006d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D38 18088 bytes
SHA-256: 03c92d59c548fbfdae08874221752d30f8caaed88781636bf7d18542e7c5fe52

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