Malicious PDF — malware analysis report

Static analysis result for SHA-256 2655238fcf5712c1…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 07:32:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1ea994d44a0566b6ce4e82b41a88e86e SHA-1: d83e97c252e643a223ddbcad41c9fb9d56995207 SHA-256: 2655238fcf5712c16668cddafacea5cab5327580c366b3e2a23cb662b3571c72
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators for popular games like Roblox. The heuristic firings indicate that these links are designed to lure users to potentially harmful sites. While no scripts were extracted, the embedded URLs and the nature of the lures suggest an attempt to drive users to download or interact with malicious content.

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.co/app/431946152/roblox-skins-download-free-game-hack In PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-join-the-builders-club-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/boxing-simulator-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-hacks-pc-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-remove-default-clothing-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-game-pass-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-real-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-crack-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-500-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/real-robux-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/hack-roblox-on-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/free-roblox-mgui_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iaiqi.ac.id/repository/show-me-how-to-get-free-robux_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_off00003029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3029 21772 bytes
SHA-256: ca33a1641a43483ab0acc7deb650028eccaa6fe064bcf26161bd32a6983ab559
font_01_sfnt_off00005ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF8 19444 bytes
SHA-256: a477abd7b451c6c96892dc9e77c5769e4574619f25effbde1b3c124bd3ae8f5c

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