Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a4f14b3feb50d04…

MALICIOUS

PDF

15.6 KB Created: 2021-06-08 20:02:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 558c35af60e92c6bf20562f47058721a SHA-1: 99f078e6f1044ef7ca986f334bbed252f088423d SHA-256: 4a4f14b3feb50d0423c01b059c5d7c71599ceebafb8accf8f02ec807acab110c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a site offering a 'game hack', a common lure for phishing or malware delivery. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to trick the user into navigating to malicious infrastructure, likely for further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 3

  • 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.
  • 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.tw/app/431946152/roblox-best-hack-for-apocalypse-rising-2021-game-hack In PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/pokemon-go-free-0-iv_GM1094591345.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manbatam.sch.id/__statics/gudangsoal/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text

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