Malicious PDF — malware analysis report

Static analysis result for SHA-256 147fb9314e14a268…

MALICIOUS

PDF

41.3 KB Created: 2021-05-12 06:47:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 64aeccfdd5c1bf1921ab3804acc4b6fa SHA-1: 6a62d66c108cf68b4fd7701f285867429e07f1d3 SHA-256: 147fb9314e14a2689472cc9f8fa2f76ae4604959c125d2f16a7062b4c39811de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external PDF documents and a redirector URL, suggesting a link farm designed to funnel users to potentially malicious content. The presence of a download button lure further supports the intent to trick users into downloading unwanted applications. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • 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 https://netcdn.xyz/app/406889139/coin-master-apk-hack-3.2-game-hack In PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/minecraft-pe_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://pt-mataram.go.id/perpustakaan/repository/free-robux-offers_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_003_off0000472e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x472E 24268 bytes
SHA-256: d84235732b2b8f69cfecd9b029725bea8330269927689ccdf7e252de9c6ccb0e
font_01_sfnt_off00007ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECF 18256 bytes
SHA-256: ea1725c6c01ea87f710175a69d8af0aa870f8ca7c85f9b36b7cf8826adfef3f7

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