Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb957f7c1808dcd2…

MALICIOUS

PDF

35.3 KB Created: 2021-06-29 05:25:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 37fca369d0fe15f3df7ef647c0621554 SHA-1: 0d3183961bc69980b872a400c119ae4d0399678e SHA-256: eb957f7c1808dcd2b850ff46135b0f439435b3500d8ffd30718f52523e5f7fdb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a malicious URL, disguised as a game hack or generator. The primary lure is 'Royl High Roblox Play Roblx For Free', directing users to 'http://netcdn.co/app/431946152/royl-high-roblox-play-roblx-for-free-game-hack'. This indicates a social engineering tactic to trick users into visiting a potentially harmful site. No scripts were extracted, but the embedded URLs are the main 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/royl-high-roblox-play-roblx-for-free-game-hack In PDF document text
    • http://www.opac.stieimalang.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-hack-roblox-by-using-inspect_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/hacks-for-roblox-flying_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/tiroblox-cheats-for-robux-and-tix-robloxcheatsnet-roblox_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-get-free-robux-easy-on-tablet_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-for-tasks_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_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_off00003317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3317 22228 bytes
SHA-256: 4a4e180aeeb5a054c70bba9eda3530f5327ed28106da3940aff61ec890eecd34
font_01_sfnt_off00006464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6464 19272 bytes
SHA-256: 5c066621737a06a07a6563ab2058fddd51ddd2d4b3ed1ecd07adbe43f2b7a291

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