Malicious PDF — malware analysis report

Static analysis result for SHA-256 a73e47155fbf8daf…

MALICIOUS

PDF

37.0 KB Created: 2021-05-14 07:36:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 5c67c1699493361f016d0a506c0c2ca8 SHA-1: 47c872da4bfbe99afb3970e2d9e731d24585c552 SHA-256: a73e47155fbf8dafa6ea08fdc0e1a8d5754387d3058e711ef04bc4df842cbde5
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to malicious infrastructure, specifically promoting a 'free generator / game hack' lure. The presence of a password-protected archive lure suggests an attempt to bypass security controls by encrypting a payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9494

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/giftrobux-com-generator-game-hack In PDF document text
    • http://businessfit.com/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://businessfit.com/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://businessfit.com/images/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://businessfit.com/images/roblox-gift-card-for-free_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
font_00_sfnt_off0000373f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x373F 24620 bytes
SHA-256: a23bf3af5b5f0fc7e3ed99f91f1fe482fffa026feece10d0de780f03620972db
font_01_sfnt_off00006e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E43 18564 bytes
SHA-256: d4fe2e40c8749f3e28ba2f676cfcb3a45d14d1e884f99ef521d4b9bf9891a09b

Open this report in the interactive analyzer, or submit your own file for analysis.