Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08e1a4a736d7799…

MALICIOUS

PDF

35.7 KB Created: 2021-07-05 18:40:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 703e4cc10c78735cb829718fb08f6d13 SHA-1: b8eb6a7efdea5dce27bb7e592539281b2150982b SHA-256: b08e1a4a736d779932d3378598625a6637a7dda4f6e55dbfb5e88d8318b213d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically luring users with promises of game hacks and free spins. The primary malicious URL identified is http://netcdn.tw/app/406889139/coin-master-free-spins-link-today-facebook-game-hack. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

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.tw/app/406889139/coin-master-free-spins-link-today-facebook-game-hack In PDF document text
    • http://suaedy-library.net/repository/lucky-patcher-free-robux_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/new-roblox-free_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/hack-aimbot-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-damage-hack-on-roblox-mad-paintball_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-do-you-change-your-roblox-name-for-free-2021_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-printable-roblox-party-invitations_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-hack-jojos-bizarre-side-project-roblox_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/twisted-murderer-roblox-level-hack-with-nopde-engine_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/roblox-royale-high-school-script-get-free-dimonds_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://suaedy-library.net/repository/esp-roblox-hack_GM431946152.pdfIn PDF document text
    • http://suaedy-library.net/repository/free-robux-card-codes_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_off0000341d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x341D 22832 bytes
SHA-256: b69421ba1daf6487b6f65ac8580205bf651d20683450a42da8df4bc28ed23a0a
font_01_sfnt_off0000672d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x672D 18856 bytes
SHA-256: c3ade08de57381628f5686ccf696f3ba3849ebe8fe4747e995ca261a5a4133ad

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