Malicious PDF — malware analysis report

Static analysis result for SHA-256 27e9ed316a196274…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 09:58:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4230e0061a2eeeaf03c1b2a5bc156e29 SHA-1: ac74533d9428b800c923dad9362d2c89eb05e0d2 SHA-256: 27e9ed316a196274c29dbd9f74d5e4de4b923f524615b52622ba7e5019c329c1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising free game items and hacks. The document body and embedded URLs strongly suggest a lure to trick users into visiting malicious sites. The primary malicious URL identified is http://netcdn.co/app/431946152/free-roblox-clothes-no-gltich-game-hack, which is likely used to deliver a second-stage payload or phish for credentials.

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/free-roblox-clothes-no-gltich-game-hack In PDF document text
    • http://library.imz.or.id/repository/coinmaster_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-how-to-hack-the-hitbox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-account-free-with-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/robux-for-offers_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/el-mejor-hack-para-juegos-de-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-apocalypse-rising-get-hardocre-free_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-money-hack-free-download_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/hacking-laurenzside-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/robux-com-free-robux_GM431946152.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_off000030de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DE 22416 bytes
SHA-256: 01df0614af3db6f542c00d6298fc5f7872366a40a19155e105afbb275606772a
font_01_sfnt_off000062f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F4 19040 bytes
SHA-256: 5dd2d57f238dc3d149be4ea87c338201c6e31a34ec384bf50fad67d027422a41