Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd23a6c26fda1000…

MALICIOUS

PDF

41.7 KB Created: 2021-05-11 21:10:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9aaeec2a0ba892f867fdd5f7db3b44ed SHA-1: c7bb8a5d6c50ec2feebf99e25de33d6d368c37f4 SHA-256: bd23a6c26fda1000ef8a8a58ccf76562c5b7ad3209d9773b77a254e7aa49b924
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, disguised as free game hacks or generators. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to lure users to potentially harmful websites. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam attempt.

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/479516143/minecraft-pe-game-hack In PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-robux-now_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://sigmaclient.info#2In PDF document text
    • https://flux.today#3In 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_off00004aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA2 24264 bytes
SHA-256: 04243bf603c95dbe3a3ba474fa301efa6200ee7de5c0a558a5b209546cc5e146
font_01_sfnt_off0000824a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824A 17724 bytes
SHA-256: f2c518e24e430f5639c0522049ec6170810629e79e139cf24a514a2af733470f

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