Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef46e6a48e1b417…

MALICIOUS

PDF

43.3 KB Created: 2020-08-15 06:00:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 616e8ac7e80b3457d56ae3b0da968230 SHA-1: 57c7fcda389dab296342c205a153165c4144f79d SHA-256: 9ef46e6a48e1b417b5ebbcc5e90eb6f9986979b9f2943bf6f690af41c3f6c70c
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=free+manuscript+handwriting+worksheets'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though partially corrupted, contains text related to 'free manuscript handwriting worksheets', suggesting a lure to entice users to click the malicious link. No scripts were extracted, but the presence of a malicious redirector and link farm strongly indicates a phishing or malware distribution attempt.

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=free+manuscript+handwriting+worksheets
    • http://korigido.foothill-highlands-rotary-wine-tasting.org/uploads/1/3/1/4/131407552/4763121.pdf
    • http://files.swancreekhempco.com/uploads/1/3/1/4/131407080/jepebapuwimijanok.pdf
    • http://files.paulsonproductions.com/uploads/1/3/0/7/130740128/6574175.pdf
    • https://cdn.shopify.com/s/files/1/0428/7194/7423/files/7399140989.pdf
    • https://cdn.shopify.com/s/files/1/0440/8908/2006/files/capitalism_in_america_alan_greenspan.pdf
    • https://cdn.shopify.com/s/files/1/0435/6194/3199/files/malutorivotidororizuzi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/50354981773.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/edit_documents_adobe.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/kiwisovopexifivuvogidagur.pdf
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/c_get_request.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_off00006af4.bin
8118a76cda91f4d0cd23236617a0ad5a77356bf4355ac6bd0400e4046a81955a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF4 5564 bytes
font_01_sfnt_off00007dc3.bin
c2fb3d27836d76e10bee65c4bd2579c0a2522a218640e7f82eee20e8b9f9d508		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC3 10268 bytes

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