Malicious PDF — malware analysis report

Static analysis result for SHA-256 b927846c801eea45…

MALICIOUS

PDF

43.0 KB Created: 2021-05-16 22:43:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 75162fef5f45e21ecf359aa0b7b13304 SHA-1: dcf27b3265d24956f03809eb5f993b553fe8f080 SHA-256: b927846c801eea450a468b441456d4580c36ff6dfc3ad96d6ef93de0cdf8aeb6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' and game hacks. The presence of a visual download button and the ML classifier's high confidence score further support its malicious nature. While no scripts were explicitly extracted, the PDF's structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/code-free-robux-game-hack In PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-spin-link_GM406889139.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-generator_GM431946152.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/village-3-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/regal-world-coin-master_GM406889139.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_off00004c28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C28 25308 bytes
SHA-256: 139babf4a272cfb73d8be0e63720ecbea0bd348b6fcd43be0bd7381a232123fa
font_01_sfnt_off000085f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F5 18188 bytes
SHA-256: 00280273b0975bee0187bf1a1cc0e29ac13cf800f2976c84d5f4ba53341fee41

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