Malicious PDF — malware analysis report

Static analysis result for SHA-256 246eaf0bfdde4b24…

MALICIOUS

PDF

45.8 KB Created: 2020-08-01 04:51:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ae13ce0e3347a5c8fff39b277cb50d2 SHA-1: f118cc8acafe9f2603b5eefcd3be844332334f09 SHA-256: 246eaf0bfdde4b24562b76eeaa7d4b93d66b069e6781971720f0c7f115622b33
150 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.com, which is designed to lure users into clicking on further links. The document body, though partially corrupted, contains text related to file conversion and includes the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility and clicks on the malicious redirector.

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.com/pify?keyword=convert+tif+to+pdf
    • http://files.gentlestrengthbotanicals.com/uploads/1/3/0/7/130739782/5f9452beca38.pdf
    • http://files.elizabethlewis.com/uploads/1/3/0/7/130776167/putexobizule.pdf
    • http://files.fodraszbutor.com/uploads/1/3/1/4/131453713/vowisajitabinadovove.pdf
    • http://files.cascadiangroup.info/uploads/1/3/1/4/131453725/jatozuvawekinikemom.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/rukuvufivusomozak.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/kafenelexa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9726/7112/files/56923285563.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/2836836304.pdf
    • https://cdn.shopify.com/s/files/1/0435/6302/4542/files/vodivomerelopokopil.pdf
    • https://cdn.shopify.com/s/files/1/0430/4335/6821/files/sivunepolenisukizegozokos.pdf
    • https://cdn.shopify.com/s/files/1/0439/6616/9246/files/87812658785.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/50836687427.pdf
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/sugefaranuripofus.pdf
    • https://cdn.shopify.com/s/files/1/0435/7121/6542/files/43671955269.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/kirotasuruvizolofabin.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/tenigerivivudubari.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062db.bin
a7f965b54757d2dbc05775d35defe5ca9ba95309327fded189724b33dfa99ed0
pdf-font-stream PDF embedded font (sfnt) at offset 0x62DB 4580 bytes
font_01_sfnt_off00007288.bin
db7862a61e00bb9512b305cbb333293d88f228dae2ae422a9ba9a13aa2749200
pdf-font-stream PDF embedded font (sfnt) at offset 0x7288 10264 bytes
font_02_sfnt_off000095c7.bin
c497e7020956884876526f9a9d0138e4369f5c46b3391b62f16f330352c2bc8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x95C7 16076 bytes