Malicious PDF — malware analysis report

Static analysis result for SHA-256 38617b99888d220f…

MALICIOUS

PDF

43.0 KB Created: 2020-08-04 06:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92b3f3786b0fffa52aeb634bf15257c8 SHA-1: c0264c77bf44bc13cea71a2738dc65e646c3dafd SHA-256: 38617b99888d220fe8914cdf8ada06008ee7f25e5d1dd2ae963ef984adaed6ef
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.com/pify?keyword=fundamentals+of+seismic+wave+propagation+pdf'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure related to seismic wave propagation. The primary intent seems to be redirecting the user to malicious infrastructure.

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=fundamentals+of+seismic+wave+propagation+pdf
    • http://files.camilleprzewodek.com/uploads/1/3/0/7/130776103/lorexone.pdf
    • http://files.gordonwalkerconsulting.com/uploads/1/3/1/3/131380005/dumokowojakuwamo.pdf
    • http://files.ushospitalitygroup.com/uploads/1/3/1/4/131406717/593e5c025d6.pdf
    • http://files.towcc.org/uploads/1/3/2/6/132681836/3a05d3.pdf
    • https://cdn.shopify.com/s/files/1/0435/2393/2311/files/linajuzuzivipufovo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/wuwabipakoveki.pdf
    • https://cdn.shopify.com/s/files/1/0428/3265/8588/files/86448708309.pdf
    • https://cdn.shopify.com/s/files/1/0433/6395/8938/files/50294585333.pdf
    • https://cdn.shopify.com/s/files/1/0432/1250/5252/files/52303140190.pdf
    • https://cdn.shopify.com/s/files/1/0429/1297/2963/files/85759841745.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7803/files/23700538912.pdf
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/vitolunakexumuwozafal.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/11227564796.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/xuzerixadikulufi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3279/5541/files/95487057846.pdf
    • https://cdn.shopify.com/s/files/1/0431/4519/9777/files/41233552807.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_off00006948.bin
f492c90fa390535b3d282b7adad64b42f249716a5cf3919f7d96a6ca5fe910c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6948 5584 bytes
font_01_sfnt_off00007c4f.bin
5a1a0bf4ce442ab2343ea3e8c554c91c7f57d3c23dcf1f09b3c584bbbb3d9933		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4F 10120 bytes

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