Malicious PDF — malware analysis report

Static analysis result for SHA-256 a594ecd732f6a637…

MALICIOUS

PDF

33.1 KB Created: 2021-06-26 15:24:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 8b49406303ddb7b9d09bc310498b6f4c SHA-1: 25fed578378edc11342bb75d04b45f3354259f22 SHA-256: a594ecd732f6a63704fae8a61ec78663a2eeb545e4d39330f528016e52e1e748
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 Malicious Link

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The document body and heuristics indicate a lure for free game currency, likely to lead users to a phishing or malware download site. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-free-straight-face-game-hack In PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-for-kids_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-club-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/wwwroblox-hack-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-100-type-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-a-game_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-builders-club-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-coin-master-coins-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
font_00_sfnt_off00002ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA8 21748 bytes
SHA-256: d04db394654bc92e7a4d3bff872098f6c647b410727ce0d1f1ad6084ff360288
font_01_sfnt_off00005c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4F 19040 bytes
SHA-256: 8584a25a451c14621f403b3686c78e70d8da44ff9ee90d9141df08184314907e

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