Malicious PDF — malware analysis report

Static analysis result for SHA-256 098c5481cd6adaa6…

MALICIOUS

PDF

33.1 KB Created: 2021-06-26 09:44:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 52c76843cfb97ba86250deb03d4bbbef SHA-1: dbb86298f3d5beaf685ad26f20992c223ce6f757 SHA-256: 098c5481cd6adaa6bdcd5e4c74d23665ffa4fc3674264d3b97544c893647b9f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free game hacks or currency. The primary link, http://netcdn.co/app/431946152/how-to-get-roblox-on-xbox-360-for-free-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a social engineering tactic to drive users to potentially malicious websites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/how-to-get-roblox-on-xbox-360-for-free-game-hack In PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-no-verification-real_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/can-i-have-a-free-nanner-roblox-id_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-account-to-delete-them_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/kazok-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-in-roblox-comm_GM431946152.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_off00002aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AAD 22140 bytes
SHA-256: 9074d3a3091ff4e09a4f50cd90824580803d98b371a4ee4ea41c7db9bc415cab
font_01_sfnt_off00005b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B61 19432 bytes
SHA-256: 1a0ffa376fbe7983543b9a8da9216a8328986766a1734f06edd765d9f0e72bcf

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