Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d3ed3ec2c9624b…

MALICIOUS

PDF

40.9 KB Created: 2021-05-14 10:31:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ee23eb6b962a4b3b903f07578ef0ea04 SHA-1: 2c9d6d969ba05b7cc5239b527ec16991c1c07c69 SHA-256: 02d3ed3ec2c9624b5edb01142dc38d431318406175c3d8be6f7bcc21be770b52
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a website offering 'free Robux' and 'game hacks'. This is a common lure to trick users into visiting malicious sites. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the infrastructure. No scripts were extracted, but the document body and heuristics indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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-hack-and-get-free-robux-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003647.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3647 26940 bytes
SHA-256: e6606106c6713e34e4fa7b5565f4d7e18ff9113f49d5d1c504bf55bb59a1738f
font_01_sfnt_off000072e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E4 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C96 18856 bytes
SHA-256: d1af75e50eba08e00cb44d21026f4cdbf29920fa5250f1112d9d0eb56b6eb802

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