Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86204128f2b3ec0…

MALICIOUS

PDF

37.3 KB Created: 2021-05-20 21:15:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c2b4bd0373cb82b077e7d76ca268f84e SHA-1: e249fb9fd96f2b5667f4b9115476a9f70a9e9961 SHA-256: a86204128f2b3ec09546e49124a28e55494c165ca5cff0cbad3414838be21663
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising a "Roblox Hack Download". The presence of a visual download button and the lure of free game hacks indicate a social engineering tactic to trick users into clicking malicious links. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/roblox-hack-download-game-hack In PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://learning.alfalah.sch.id/__statics/gudangsoal/files/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.learning.alfalah.sch.id/__statics/gudangsoal/files/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • https://learning.alfalah.sch.id/__statics/gudangsoal/files/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003181.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3181 26936 bytes
SHA-256: e08e175fbe097f4cde7ea78a8f8ad2314cf9de3d0300cb5629724728c14d7652
font_01_sfnt_off00006ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF1 18688 bytes
SHA-256: 777ecd9bf4cba19c66ac3b03e370a33bd01ed4cf882c145341853d771ac6f80e

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