Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f4e6038040e2286…

MALICIOUS

PDF

35.3 KB Created: 2021-06-27 21:40:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 47b7d17d7426b55c389400102abba6f7 SHA-1: 0024792d8dc0eaa8a9d734a9af3f4e0c326e0fc4 SHA-256: 5f4e6038040e228625ce6429981199dc30a0e64f0a4d66d36d73180ff085a311
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, specifically advertising game hacks and free currency for games like Roblox. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malicious content or downloads. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of a phishing or scam attempt.

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-apk-hack-2021-game-hack In PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-hacks-for-roblox-fallen_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-change-your-name-on-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/cheats-for-jailbreak-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/tiktok-free-like-bot_GM835599320.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hacked-roblox-account-and-banned_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-hack-in-all-game_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/pubg-uc-website_GM1330123889.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_off000031ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31ED 22504 bytes
SHA-256: a22f7f2accb6393a7f0f5b44f6fde1bdfe59d63b086654ec17e4313d0d36ccce
font_01_sfnt_off00006423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6423 19236 bytes
SHA-256: 5493c1ac42b642cd7476b3df3fb98d9e01e29a6e71b1b460c636136e93dec276

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