Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e3be7bd384d6e0…

MALICIOUS

PDF

60.1 KB Created: 2020-03-12 11:30:23 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 590b09266a11d435d9d038f3b41753be SHA-1: 7e74f09be434ed72a1d24163cc02962f6171e8b1 SHA-256: e1e3be7bd384d6e03750eb3384af0ae85cfa53a2a871d9b491d2ee1d1760b3ac
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which are dynamically generated and point to various domains. The document body, though partially corrupted, contains text related to 'Ayatul kursi bangla tarjama' and mentions the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The primary heuristic indicates a 'PDF_SEO_LINK_FARM', suggesting the document's purpose is to generate traffic to a network of linked sites, likely for SEO manipulation or to host further malicious content.

Heuristics 3

  • 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.
  • 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://brandstormpromotions.net/uploads/1/3/1/1/131164223/131164223.html#ayatul+kursi+bangla+tarjama
    • http://packingoptimizer.net/uploads/1/3/0/8/130814402/zepotufuxo_fixikuzodi_wonazejomav_riziwewe.pdf
    • http://www.imageconstruction.org/uploads/1/3/0/8/130814297/gelenifukagowu-putenelametu-venukiwilowu-zepimo.pdf
    • http://yourwaterfall.net/uploads/1/3/0/4/130483074/bovadalotoxi.pdf
    • http://rhrcreations.com/uploads/1/3/0/3/130324005/4282513.pdf
    • http://remnantstudios.com/uploads/1/3/0/3/130313145/rivigamonolod-xasavimigi.pdf
    • http://comeatvn.com/uploads/1/3/0/4/130476372/guxawizu.pdf
    • http://t-vic.com/uploads/1/3/0/5/130589373/ab717b24.pdf
    • http://www.thebestofmemphis.com/uploads/1/3/0/9/130970003/dafonegog.pdf
    • http://theimaginationranch.com/uploads/1/3/0/7/130739399/belobu-dorum-nupifilez-vipuzafipes.pdf
    • http://newyorkreadingsuccess.com/uploads/1/3/0/7/130739073/pajisom_riputamarebadus_kogoj_zomoduvowuf.pdf
    • http://pontowtrailer.com/uploads/1/3/0/3/130313741/pobukoxisasi.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1a2.bin
bc14606dc7eac77bfdc3a9d1b4fff562f2bc785d91c0aec09502c2b03ecbbe6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1A2 8352 bytes

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