Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8023e4f76a97f22…

MALICIOUS

PDF

36.0 KB Created: 2021-05-20 13:32:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5d5bd9de69e6889ddca0f604b8916d3b SHA-1: c84c0fe6c7f75c165ffcd4a42ad99f312a5f93c0 SHA-256: d8023e4f76a97f22d8639de2ade999a0e28bb2f51e2623ae14499bdee61c55bc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, masquerading as game hacks or generators. The document body and embedded links suggest a lure to trick users into visiting these sites, likely to download further malware or engage in scams. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/when-was-minecraft-free-game-hack In PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/game-toolbox_GM479516143.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_off00003505.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3505 24808 bytes
SHA-256: 210520cc49a643c92b1a03a5ebbf366481eeffac35e1a754fa3f172e28682638
font_01_sfnt_off00006ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA0 17932 bytes
SHA-256: 973dc24b982d21c7a26f6b1404f6f01dfc9d6ca8ce5dc51b1335565276afdc72

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