Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d8bec8ba28a79bb…

MALICIOUS

PDF

42.5 KB Created: 2020-08-28 00:54:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a917e491770783061e41c2a03ece5eb0 SHA-1: 43255b24b27bd31ba5f203cbafc5a6de21584fb6 SHA-256: 4d8bec8ba28a79bb784ad1bceea6bca0bd414ee5a3d71cd8c6964318e16e3b75
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a lure related to obtaining Wi-Fi passwords, which is a common social engineering tactic. It embeds a link to a known malicious redirector, ttraff.cc, which likely serves as the initial stage for delivering further malicious content. The PDF also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm or content distribution strategy. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ttraff.cc/pify?keyword=h%25C3%25A4kkimine+t%25C3%25B6%25C3%25B6riistad+wifi+parool
    • http://depemogi.walnutgrovebaptistchurch.net/uploads/1/3/2/6/132682883/tesapizok.pdf
    • http://files.steepleclaydonschool.com/uploads/1/3/2/7/132740541/lodidafubemura.pdf
    • http://files.amandasunshinewilliams.com/uploads/1/3/1/3/131380251/4a6da47.pdf
    • http://pogolexu.goossensdesigns.com/uploads/1/3/1/3/131379730/tinufeledekuz-wiwewerejija-zefiwuxuzot.pdf
    • http://files.hickmanfootball.com/uploads/1/3/0/7/130776788/kamubumul-dobozokowobiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5100/7638/files/lawedijisazegokuforamag.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9176/files/jexojoretukavefowimurar.pdf
    • https://cdn.shopify.com/s/files/1/0440/3780/0086/files/nosawe.pdf
    • https://cdn.shopify.com/s/files/1/0433/9639/9265/files/74643737376.pdf
    • https://cdn.shopify.com/s/files/1/0434/1180/0220/files/access_consciousness_bars.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9385/files/95798528172.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5876/files/fetif.pdf
    • https://cdn.shopify.com/s/files/1/0434/6865/2697/files/comprar_vidrio_liquido_para_manualidades.pdf
    • https://cdn.shopify.com/s/files/1/0429/5720/9753/files/rikileli.pdf
    • https://cdn.shopify.com/s/files/1/0435/4582/1338/files/21837899425.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006568.bin
21ba7dd0a4f6c22f403c45a1e4506d678adefafab2ae4e38c07743be952c1431		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6568 5680 bytes
font_01_sfnt_off000077d6.bin
3e5e20d366bf9965de9e6937f3c866d4d4ff983fc648357f035532dc1a2d6274		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D6 11024 bytes

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