Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce00f6b61e553a2f…

MALICIOUS

PDF

44.6 KB Created: 2021-06-11 12:36:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5b1edb2f852a3e49e175d35d35ba4a7b SHA-1: fe6dd5e3bf47e14a8fcb53acd69893380df617c7 SHA-256: ce00f6b61e553a2f4fa2ffca9baeda562db137125fbef89e39d9e37ada5b0427
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free generators' to lure users. The primary malicious URL identified is https://netcdn.tw/app/431946152/roblox-parkour-how-to-use-cheat-engine-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or redirection attack, likely intended to deliver a secondary payload or lead users to credential harvesting pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-parkour-how-to-use-cheat-engine-game-hack In PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/robux-infinity-free_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-get-free-clothes-on-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/games-on-roblox-that-will-give-u-free-hat_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/inmpact-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FDD 24716 bytes
SHA-256: b2e4ce6805701b75a76a2e7766a12cf9e71ae88dd74286be9c158821d3154f45
font_01_sfnt_off0000882d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882D 19504 bytes
SHA-256: 9b11baa38dc4d21f2dcd84d23a01ae4b5f9582adced4898fcb4b9ac7b72727cd

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