Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba2069cb08890095…

MALICIOUS

PDF

49.9 KB Created: 2021-06-09 13:08:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6cdf31fb5825f4b1cf6c8334472283ce SHA-1: aa4ec6481e6fc55c8ac8d5f370067fccd250e2d7 SHA-256: ba2069cb0889009582f049dbeff201d3e99267973928505c9706bcf4e9660ad2
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 designed to lure users with promises of free game items or accounts. The primary malicious URL identified is https://netcdn.tw/app/431946152/free-roblox-accounts-2021-may-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at redirecting users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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 https://netcdn.tw/app/431946152/free-roblox-accounts-2021-may-game-hack In PDF document text
    • https://library.fdk.ac.id/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-free-boombox-island_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/roblox-robux-hack-mod_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/how-to-hack-roblox-booga-booga-on-mac-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://library.fdk.ac.id/repository/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • https://rblx.landIn 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_off000051db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51DB 34192 bytes
SHA-256: 689946148c57272fdb1f983ab1704bd2e9167ffb29b2802c4f5cbf129ad319f0
font_01_sfnt_off00009e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E1B 19196 bytes
SHA-256: c4b69e28ee7b073dac0c2c7ddc65ace587b1672eb55a9f922c41d81c4858fb9b

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