Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e98b2ff3bd5fb86…

MALICIOUS

PDF

41.7 KB Created: 2021-05-10 17:02:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1a7b05c33d6d4b02fb00053b6e7d17d4 SHA-1: 0953a1ecea445e0e8dea451a2316587a1628e9fc SHA-256: 4e98b2ff3bd5fb86a20000ff8bdacb62ee1a84cd3942801140a2784514881f96
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appears to be a 'game hack' or 'free generator' site. The primary redirector URL is identified as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/master-coin-free-spin-daily-game-hack In PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-coin-master-cards_GM406889139.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
stream_003_off000049e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E7 23960 bytes
SHA-256: 116ac325936bc1d8653247e079f934ea8b32ddce53989bca72428fac59255d80
font_01_sfnt_off00008091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8091 18308 bytes
SHA-256: 29cb14730145ee7b34c09c890f7b8837377acbe26d0b8b5df788708214c202fb

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