Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ae69f3df144f4e…

MALICIOUS

PDF

35.8 KB Created: 2021-06-19 13:26:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 618526726687760f8461be789fdae33c SHA-1: 69f024416042e2fa363d012dc442e2a0a7c4338e SHA-256: 59ae69f3df144f4ed68566d32f9fab8fc5f71cf08b0ab5d5ee646d3d8d6f25c5
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 'robux hacks' and game cheats. The primary lure appears to be a 'robux hack' generator, directing users to http://netcdn.co/app/431946152/robux-hack-2021-november-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack designed to lead users to potentially harmful content or further malicious downloads.

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/robux-hack-2021-november-game-hack In PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-roblox-pants-templates_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/haxteam-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/robloxcom-free-kkk-k-k_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-generator-ad_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-robux-hack-generator-how-to-get-free-robux-download_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/robux-hack-no-human-verify-2021_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/is-roblox-giving-away-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/roblox-free-download-for-android_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://perpus.iainkediri.ac.id/pasca/repository/free-robux-obby-2021_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
stream_002_off0000317f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x317F 23096 bytes
SHA-256: 6ab43799f3b651d19ede3e7485f5bcb70680418a96f8828e574c442b1448dfd1
font_01_sfnt_off00006582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6582 19496 bytes
SHA-256: 8eea542a057f0ae5479298399d27d81161cfa3616ea2564bdf31f83076d99c25

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