Malicious PDF — malware analysis report

Static analysis result for SHA-256 028ca2646245cd11…

MALICIOUS

PDF

37.0 KB Created: 2021-05-30 03:08:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e1ded8f8b437ded363da0e9b608dacdf SHA-1: 7c43d5dc2318b11adb692d18287e9915453d1cfd SHA-256: 028ca2646245cd11bf2d44f735f9e65b07a0708b479b6f70a508d9670ba05a5d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "Coin Master Free Spins" and "generator" lures. The ML classifier also flagged this PDF as malicious. The primary purpose appears to be redirecting users to potentially harmful websites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9394

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-spins-link-today-game-hack In PDF document text
    • https://multicarlo-bhp.pl/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://multicarlo-bhp.pl/wp-content/uploads/fsqm-files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • https://multicarlo-bhp.pl/wp-content/uploads/fsqm-files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://multicarlo-bhp.pl/wp-content/uploads/fsqm-files/free-robux-generator-no-survey_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_off00003384.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3384 24820 bytes
SHA-256: b1393ff33063f496317d3313ed44519f16f839cbaa775fe921226ddcc063fd55
font_01_sfnt_off00006c46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C46 19384 bytes
SHA-256: d244c4c38e08924b50698ce95b19bcf0f00b8374bbecd207d0a8499b459dedf0

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