Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbce8452a03b978d…

MALICIOUS

PDF

50.5 KB Created: 2021-06-14 00:35:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b53f4a12763cb50fb37022b6009983f3 SHA-1: 6cb5295baf775f2be8da2d1c5ae6743012fae2cd SHA-256: bbce8452a03b978d9e44d6e3cc19e750c5f1fa6d59c238841e53b15568246887
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, presented as game hacks and generators, designed to lure users into clicking them. The primary link, http://netcdn.co/app/431946152/roblox-unpacking-simulator-hack-game-hack, and others hosted on leagueforwomenrights.gr, suggest a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9349

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-unpacking-simulator-hack-game-hack PDF link annotation
    • http://leagueforwomenrights.gr/images/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/roblox-game-scripts-pastebin-free-gamepass_GM431946152.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/comment-avoir-des-truce-free-sur-roblox_GM431946152.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/how-to-get-everything-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://leagueforwomenrights.gr/images/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55C0 27096 bytes
SHA-256: b65e7f814598ed73a95667e12e0b30f42f8b50ffb7bf335e2a8b7e98ad8c7f3e
font_01_sfnt_off0000928a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928A 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F9C 19456 bytes
SHA-256: 066be7371f4dbc2911ad1b0ee79b421528c538a995e565a715ac0c18f68be50f