Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e2fcc0cbf7ce82…

MALICIOUS

PDF

34.1 KB Created: 2021-06-27 00:47:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 880474a4d3b2ae7e805e94f27f982d2a SHA-1: 50738e8c47545dfb4a327a68100aa1fb2e31db47 SHA-256: 74e2fcc0cbf7ce820bc5719581fce68565287658060fbf8dc142b52510652ccc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous embedded URLs that point to various "free" resources, such as game hacks and account generators, indicating a phishing or scam attempt. The heuristic 'PDF_SEO_LINK_FARM' suggests a large number of these links are generated for SEO purposes, likely to attract unsuspecting users. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-roblox-banner-maker-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-without-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/cute-free-outfits-roblox-girl_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-gift-card-numbers-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-the-chat-roblox_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_off00002f83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F83 22068 bytes
SHA-256: 986561703c75c9d8612722cd6dab645bf4f846c01cd613a7c0af0a669c74b75d
font_01_sfnt_off00006040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6040 19016 bytes
SHA-256: 85f384e95abc0310c1e40f11fed17dafc5094d45d90c06bc5c1654fa4f9d3c6d

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