Malicious PDF — malware analysis report

Static analysis result for SHA-256 488858a50909c317…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 18:07:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 75c35a715d2c9fd1ddd6b1d2ff51ed6c SHA-1: 4ebfc277915043a7f90e1e26fda1db1ea32f72fe SHA-256: 488858a50909c3179c64030560e472010470b39b797a435208d7f361cddd103a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a game hack download, which redirects to malicious infrastructure. This lure is designed to trick users into visiting a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/minecraft-free-download-2021-game-hack In PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/pubg-uc-midasbuy-pakistan_GM1330123889.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/what-is-the-fastest-way-to-get-xp-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-link-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/oprewards-login_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/app-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-do-i-get-free-robux_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
font_00_sfnt_off0000539e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x539E 24652 bytes
SHA-256: b4104955f79cdbecbc7bbd7e9056d79eb9089c9b69b65e48d2d82fee18c1b55e
font_01_sfnt_off00008b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1E 18692 bytes
SHA-256: f0fa5510acf1599a685d464226cd2f0c140795c6d8c228f219ca543c0e165813

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