Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2fe33c5b3c670d2…

MALICIOUS

PDF

41.5 KB Created: 2020-08-03 04:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7bd196d3f5b0f27f072ffef345057be SHA-1: e266f2d47f675d824e35184462ee5dedb8c7c87d SHA-256: f2fe33c5b3c670d20d8c62caa0750762644fe6de8ecbef87a0213f3bc1ec1422
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a high number of embedded links, many pointing to Shopify domains, but also includes a critical link to a known malicious redirector at 'ttraff.ru'. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly suggests the document's content is designed to trick users into believing there are updated payment instructions, a common tactic in business email compromise. The presence of the malicious redirector indicates the likely intent is to lead the user to a phishing site or a download for further malicious payloads.

Heuristics 4

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.ru/pify?keyword=skillpipe+to+pdf
    • http://files.humblewarrioryoga.org/uploads/1/3/1/4/131452944/0b95bb4a1f.pdf
    • http://nabudiki.kathleenmcnenny.com/uploads/1/3/1/4/131407558/wujanokifu-potuwabava-purawepirivovoj-venananirad.pdf
    • http://files.stayinplace.org/uploads/1/3/1/3/131398144/3467017.pdf
    • http://files.laketrailnation.com/uploads/1/3/0/8/130815095/monuravolaxed.pdf
    • https://cdn.shopify.com/s/files/1/0433/4642/8062/files/fikanaregolatabomip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9455/7350/files/47110121746.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/20731404745.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9592/files/murefatidijozavezo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7700/files/26314235596.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/17004705844.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/77022960654.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72710717911.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fufalelavajukunegaxiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1585/files/dusuxupapunesiragana.pdf
    • https://cdn.shopify.com/s/files/1/0433/2696/3865/files/dubalo.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_off00006626.bin
74ef0d31b70fa8d6e64a158797ad4cbe69027b749d0362c74f8b9aead289ad8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6626 4716 bytes
font_01_sfnt_off00007653.bin
c77b92e9105235b3c71bc2ebb9d40c4e1ecd68d76de5fa0ceabd5db65ddfeb45
pdf-font-stream PDF embedded font (sfnt) at offset 0x7653 10304 bytes