Malicious PDF — malware analysis report

Static analysis result for SHA-256 42bdd46053470215…

MALICIOUS

PDF

40.4 KB Created: 2021-07-04 12:00:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 37147de78d95835090d16d66199c5118 SHA-1: 64075b4b3a1a291e7a65cde16b11e2a4ee9fa2e1 SHA-256: 42bdd46053470215094adf0e820f9b8fa32e9713a8fe0fa29e9ee89934c3433c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The document body and heuristic firings indicate a lure for users to download potentially unwanted or malicious software. The primary URL http://netcdn.tw/app/479516143/minecraft-bedrock-edition-pc-download-free-game-hack is identified as a malicious redirector, suggesting the document's purpose is to facilitate the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9659

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.tw/app/479516143/minecraft-bedrock-edition-pc-download-free-game-hack In PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-master-hack-apk-ios-download_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/el-mejor-video-de-hack-robux-gratis_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/earn-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/roblox-hack-pacht-fix_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/robux-gainer_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.keperawatan.unand.ac.id/repository/hack-forum-for-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000342f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x342F 22056 bytes
SHA-256: d45bf44bae380a893a60dba3f90de32dd2eb6b562d9922e90a464e234119119b
font_01_sfnt_off000064c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C4 2848 bytes
SHA-256: e494dfbc17a31b8b677e20f5e37602c538292163208a26380855969ce973a69b
font_02_sfnt_off00006e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E79 2800 bytes
SHA-256: 1756bf2370268b82899ca819fa059e16c32fca103da24d388e887c3e7a349852
font_03_sfnt_off00007870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7870 19120 bytes
SHA-256: 18cb023a17afcf6f32a9a51320420adca51e0723189dec2cb2e77558246ce529

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