Malicious PDF — malware analysis report

Static analysis result for SHA-256 c547f2f8b052a1ec…

MALICIOUS

PDF

37.9 KB Created: 2020-03-29 01:54:20 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7a156f84f429f6d39b5cb74422a7f849 SHA-1: 0acdbb58579599d85f8b72d8ca3813791dfb7763 SHA-256: c547f2f8b052a1ec126a3cb7882e9399e8bd7fa44713558a9dc9e376ae1a51b5
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to various domains, a technique often used for SEO manipulation or to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' strongly indicates this behavior. The document body itself is heavily obfuscated and contains what appears to be junk data mixed with URLs, making it difficult to ascertain a specific lure. No scripts were extracted from this sample. The primary attack pattern observed is the distribution of a large number of links to potentially malicious or SEO-farmed 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://bejustalittlebetter.com/uploads/1/3/0/2/130289734/130289734.html#why+is+the+book+of+maccabees+not+in+the+hebrew+bible
    • http://www.keystonesignsmadefast.com/uploads/1/3/0/7/130740129/favejefewoj_gupabu_laforug.pdf
    • http://595corporateparkofcommerce.com/uploads/1/3/0/6/130620764/278950.pdf
    • http://sacredsummitchocolate.com/uploads/1/3/0/6/130639511/morotogotojesan.pdf
    • http://sophiearonson.com/uploads/1/3/0/6/130621140/patadilogutekanek.pdf
    • http://ceramist.ca/uploads/1/3/0/6/130604651/tuvabujibotoxi_pugivuli_xabekoteli.pdf
    • http://northelkinchurch.org/uploads/1/3/0/4/130476853/24218867f.pdf
    • http://drbarrnd.com/uploads/1/3/0/4/130483114/eae92204a44.pdf
    • http://katherinegaulke.com/uploads/1/3/0/7/130740450/1360787.pdf
    • http://nullaginecrc.net/uploads/1/3/0/4/130483256/7cac1568496a14.pdf
    • http://splatteredinkwestland.org/uploads/1/3/0/7/130740090/a7a36323ec4eda2.pdf
    • http://winslowroadfalmouth.com/uploads/1/3/0/6/130639947/e47a3ee.pdf
    • http://kristymarieportraits.com/uploads/1/3/0/6/130605341/daa1301e3502ec9.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_off00006a13.bin
7bdaad032bbe5abe5708354cb8afef8823d737be59471aabb12a63e16676c166		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A13 7792 bytes

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