Malicious PDF — malware analysis report

Static analysis result for SHA-256 52384a0f2d200bfe…

MALICIOUS

PDF

35.7 KB Created: 2021-06-27 23:20:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 377fd01f50e1f76d4357e56e86124ea4 SHA-1: c4818359101afab787ab6aea8d2e388d9a240cc5 SHA-256: 52384a0f2d200bfe05a8fd74f72241df687edb1ecbfdaf6d2a68927ac64a7a19
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains that are associated with malicious activity, specifically luring users with game-related cheats and hacks. The document body and embedded URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a malicious workflow.

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-card-free-codes-2021-game-hack In PDF document text
    • http://smpn1sda.sch.id/slims/repository/good-roblox-booga-booga-websites-to-hack_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-hack-in-boku-no-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/robux-offers_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-free-items-obby_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-hack-btools-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-account-hack-2021_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-rovive-free_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/new-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/da-hood-hacks-roblox-site-v3rmillionnet_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/robux-hack-download-no-virus_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/hack-my-game-xyz-coin-master_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_002_off00003025.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3025 23692 bytes
SHA-256: 09b6b4a3adc3d087a0127c737043b0296decf4d37e3febe8d565ead7db4c86fc
font_01_sfnt_off000065fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FE 19228 bytes
SHA-256: 364c0a0a46c65c293f4ff1cdbfd85df4d337feea7a7d281ebda23a00fde701c0

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