Malicious PDF — malware analysis report

Static analysis result for SHA-256 d19e58d426ed12b4…

MALICIOUS

PDF

35.9 KB Created: 2021-05-23 10:36:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ee2b041bdc8c627a9aed4e6f89a61fb2 SHA-1: a4419c05d0582e57fe7b05dd2cf650f283616628 SHA-256: d19e58d426ed12b47dcbdb797408da458676ff8c692b5ae8fa9b1c3666b64304
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The document body and embedded artifacts suggest a lure for free in-game currency or cheats, which is a common social engineering tactic. The primary malicious link identified is https://netcdn.xyz/app/406889139/coin-master-free-soins-game-hack, which is flagged as a malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/coin-master-free-soins-game-hack In PDF document text
    • http://www.salwangurgaon.com/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/tiktok-free-99_GM835599320.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://www.salwangurgaon.com/files/what-games-on-roblox-give-you-free-robux_GM431946152.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
stream_002_off00003234.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3234 25820 bytes
SHA-256: ddc4de8beafb527359407b67172a9e3bcab5cb5d2b9868487c25bf9e6bd979ec
font_01_sfnt_off00006cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB9 17712 bytes
SHA-256: a621fa0cf6ecf429ccb0e9762dad0d1971a2824e8730eca88621f5efe7e14995

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