Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcab7630b1601895…

MALICIOUS

PDF

42.1 KB Created: 2021-05-13 00:11:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 5a56dd4df7e796acb174f3d96ce1c693 SHA-1: 95b32aed4c679a440b6aac3051cade8ee88aca75 SHA-256: dcab7630b1601895eac22931bc1552a6e5b65d69ae1fc7ca424885f6043a0e41
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to malicious redirectors, masquerading as "free generator / game hack" lures. The primary malicious link directs users to a site offering a "daily free spins coin master 2021 game hack". The document body and embedded URLs suggest a social engineering tactic to lure users to potentially malicious websites, 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/daily-free-spins-coin-master-2021-game-hack In PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus//repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus//repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus//repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus//repository/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus//repository/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus//repository/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus//repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.kemenkopmk.go.id/perpus/perpus/repository/mathep_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
stream_003_off0000497b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x497B 24276 bytes
SHA-256: 3f1d1a21dc707bff46405eca266b0b5bf43d4f6fe1b42d7b71b95cd8edf60424
font_01_sfnt_off000080d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D3 18708 bytes
SHA-256: 76af36f54327e394f6a0995f5c1804c6d580e71cb7eebf938ec25838add40309

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