Malicious PDF — malware analysis report

Static analysis result for SHA-256 3792eb74bf4702ee…

MALICIOUS

PDF

21.9 KB Created: 2021-07-05 19:14:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 597fe74c8dc4a5f37f04a8cc382e9e7e SHA-1: e9db173e87cd8d94ae3e5957e30d0f6ae5a65dd4 SHA-256: 3792eb74bf4702ee18a91dbbc3abefb43d67f33646ed9464464207af47e52295
152 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 game hacks and generators. The primary redirector URL is http://netcdn.tw/app/431946152/ro-ghoul-script-game-hack. This indicates a social engineering lure to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded links are sufficient to classify this as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 http://netcdn.tw/app/431946152/ro-ghoul-script-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/pokemon-go-free-808_GM1094591345.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-vh2-credit-hack_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-how-to-create-free-model_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-draw-alpha-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/give-away-game-in-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/brick-bronze-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/get-free-robux-mobile-app_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/cheat-roblox-dongeon-quest-installer_GM431946152.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D54 22272 bytes
SHA-256: 76e54bfdd083d75e18c990c0fee7184ca4982356d7ba923b8628e83612026bc3

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