Malicious PDF — malware analysis report

Static analysis result for SHA-256 b67981b73dbc00af…

MALICIOUS

PDF

41.6 KB Created: 2020-08-20 14:15:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d14ec8adf9d4355d25296270586f68f SHA-1: 8224f02c4791c6c1491f754e091fe9aa3f388705 SHA-256: b67981b73dbc00af64eb2757474957e7c9e49e7d8650129aad88a8b9b218cfed
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a malicious redirector at 'ttraff.com' with a query string suggesting a lure for 'gmail for windows 10 pro'. This indicates a phishing or scam attempt. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack.

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=gmail++for+windows+10+pro
    • http://files.betsierivervet.com/uploads/1/3/1/8/131872054/kivelobevupewaz.pdf
    • http://files.natashabangertmotion.com/uploads/1/3/1/4/131437937/28cd0ca8ea2d32d.pdf
    • http://rovoxelig.splashsteamboat.org/uploads/1/3/1/4/131453526/fipesoja.pdf
    • https://cdn.shopify.com/s/files/1/0439/2783/0696/files/jatosewoki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdf
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/online_to_word_editable_format.pdf
    • https://cdn.shopify.com/s/files/1/0434/5053/1990/files/71196583049.pdf
    • https://cdn.shopify.com/s/files/1/0437/9652/9314/files/zafodobanudekovusalofawo.pdf
    • https://cdn.shopify.com/s/files/1/0452/3671/5677/files/33012576100.pdf
    • https://cdn.shopify.com/s/files/1/0434/6383/5814/files/36982131139.pdf
    • https://cdn.shopify.com/s/files/1/0440/9376/7832/files/il_barbiere_di_siviglia_rossini.pdf
    • https://cdn.shopify.com/s/files/1/0431/8730/6658/files/explain_the_branches_of_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0438/1474/8322/files/kenwood_ts-_570d.pdf
    • https://cdn.shopify.com/s/files/1/0440/6925/7366/files/bs_standards_electrical_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/9824/2214/files/27445691459.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_off00006395.bin
a7f867f9416e1445e8986c64ca7cb30062eded41242caf2c9e295ffa51e92800		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6395 5504 bytes
font_01_sfnt_off00007644.bin
21a2fc4da1c73bd452331ec22cc2d4b056fcf4c50ec34d82437948258052aad0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7644 10440 bytes

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