Malicious PDF — malware analysis report

Static analysis result for SHA-256 486ac666850ab384…

MALICIOUS

PDF

33.8 KB Created: 2021-06-26 10:47:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6ad8bb8d1a6fa9957f91707f6ad2109a SHA-1: 51fc9d7d0eb16f4ef66b2ed2d3a1eaeccf10b453 SHA-256: 486ac666850ab3849b70a256446395f8b7bc2c9e4e38844a1e450844a6baaee2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free generators, as indicated by the document body and heuristic firings. It contains multiple embedded URLs that redirect to malicious infrastructure, specifically http://netcdn.co/app/431946152/i-hacked-my-haters-roblox-account-game-hack. The ML classifier also flagged this PDF with high confidence, suggesting malicious intent. The primary attack pattern involves directing users to potentially harmful external sites through deceptive 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/i-hacked-my-haters-roblox-account-game-hack In PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-to-get-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/instantrobux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/ways-to-get-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-2021-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/gana-500m-de-robux-con-este-hack-2021-100-real_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/hacker-scp-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-on-roblox-on-a-tablet_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-the-conquerors-hack_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_off00002e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E65 21524 bytes
SHA-256: 05b09261a028589d83e5442fb618a002c5be287aa66d69ef13ecdad1f0c29310
font_01_sfnt_off00005d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D81 19448 bytes
SHA-256: b2f52e81794eef6f331038dcb2c9a69cfa79e3819e3b9b7c139d18e53fa41ccf

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