Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceb95318a6d7c310…

MALICIOUS

PDF

34.7 KB Created: 2021-06-30 11:10:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0dc5879cf8fa17e805d7ae60454a7352 SHA-1: 1d17150ba681f95b890c3b9fb550da6fc8522f78 SHA-256: ceb95318a6d7c3105777c9d099ecd6b5a3863e1f938ea9194939a998e41a38a8
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, identified as a link farm, that lead to websites promising game hacks and free currency for popular games like Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/roblox-hack-robux-android-2021-game-hack, is presented as a direct download or generator for Roblox hacks. This indicates a social engineering tactic to trick users into visiting potentially malicious sites or downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-hack-robux-android-2021-game-hack PDF link annotation
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-speed-hack-in-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/robux-hack-robuxian_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-generator-the-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-hack-roblox-tycoons-2021_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/galaxy-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-hack-roblox-for-billions-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-unlimited-spin-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_off00003003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3003 22204 bytes
SHA-256: 0a309c9d100529c0397455351d9ef9db4bbf7bcba82cc4d57ae4c693fe0ae82a
font_01_sfnt_off0000612c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612C 19492 bytes
SHA-256: cd488479322282c86a6cd58fc6524cb5f689ab294f15e42a9f1571c4fbb719d3

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