Malicious PDF — malware analysis report

Static analysis result for SHA-256 9abf39ef741dae65…

MALICIOUS

PDF

40.7 KB Created: 2021-05-12 20:00:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 55cc45776893bce6af67b1041faea808 SHA-1: 38e4174c0331cab2bcaa527fcee55cb96b7eda79 SHA-256: 9abf39ef741dae650cb5bc0e10afe6a1e4a1b8fac98aaf2cb58be35df10b5b15
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically a 'free generator / game hack' lure. The document body includes text and a call-to-action phrase ('CLICK HERE TO ACCESS ROBLOX GENERATOR') that reinforce this social engineering tactic. The primary malicious URL identified is https://netcdn.xyz/app/431946152/rbx-robux-game-hack, which is part of a known malicious redirector chain.

Machine Learning

  • Nyx PDF Classifier clean score 0.0228

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/rbx-robux-game-hack In PDF document text
    • https://pasamatour.com/ckfinder/userfiles/files/claim-robux_GM431946152.pdfIn 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_off00003433.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3433 28700 bytes
SHA-256: e8cf138552bafdb2b13ab89abf60fbc171af960de991128decce103defd3d2fd
font_01_sfnt_off000074e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E9 2888 bytes
SHA-256: dcdd98ee8e25436a83587ccb4027347dd2c3fcec95f3413942edd4086125bcca
font_02_sfnt_off00007ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBD 17852 bytes
SHA-256: db335316de1c827679f476dd5ee7b92397be9666285fe33d80a402a572565b32

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