Malicious PDF — malware analysis report

Static analysis result for SHA-256 805ca1440e1494f1…

MALICIOUS

PDF

33.7 KB Created: 2021-06-29 05:25:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: f879ccd4a404c27448d55fe2b28c55fa SHA-1: 0e9371bdb8b2dfb4c91226a5b7fd7afed56507cb SHA-256: 805ca1440e1494f1b76db5da731e82a14ab56fe9a96da13f0711f5ff02045994
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are hosted on domains associated with link farms and redirectors. The document body and embedded links suggest a lure for free in-game currency or hacks, a common tactic for phishing or malware distribution. The presence of a malicious redirector link indicates a high likelihood of leading users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/free-generator-code.org-roblox-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/hello-neighbor-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-piano-player-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/han-hackeado-mi-cuenta-de-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-no-human-verification-moblie_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/everything-free-on-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-free-robux-100-real_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-no-password-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-promo-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-hack-2021-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/tuto-roblox-get-free-robux-no-fake_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-hack-online-no-survey_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-robux-today-codes_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/emoji-puppy-tshit-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-for-pc-free_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_off00002ce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE1 22292 bytes
SHA-256: e92b956a9e06d32561365de066597f7fad13ca1167f8d27679de212043935a32
font_01_sfnt_off00005ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA2 18992 bytes
SHA-256: f84d7a492e472be58ee76eefaef70a988d7dc82fdcc111194787457fa32d81d0

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