Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fdd76b04cf3e8c9…

MALICIOUS

PDF

42.0 KB Created: 2020-08-22 16:13:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87a979c54824eab2603e993d36248173 SHA-1: cdea39042f15c8939c62a605fe9f17d88c153183 SHA-256: 3fdd76b04cf3e8c92c6ae4dd18ab3458cc305b79b09ee0e53e173ccaaa700987
160 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.ru, which is associated with malicious activity. Additionally, the document exhibits characteristics of an MFA lure, suggesting an attempt to harvest credentials or session tokens. The presence of numerous external links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=acls+2015+pdf+espa%25C3%25B1ol+descargar
    • http://files.shilohrescue.com/uploads/1/3/2/3/132302824/1555e246e.pdf
    • http://files.stoddardumc.com/uploads/1/3/0/8/130815009/4598015.pdf
    • http://xafuxiz.blossomholistichealth.com/uploads/1/3/1/4/131406086/bulobirazexa_nimosopebi_luzobevoru_vozedupa.pdf
    • http://durow.riveflowyoga.com/uploads/1/3/1/4/131454950/buzifusalatapos-zeliwirabejepe-fepemaletotedet-gupozitoxuwep.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/94972181354.pdf
    • https://cdn.shopify.com/s/files/1/0433/6196/0091/files/jixunotemape.pdf
    • https://cdn.shopify.com/s/files/1/0430/8680/7201/files/98287587768.pdf
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/69736014976.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/pavuraxotewup.pdf
    • https://cdn.shopify.com/s/files/1/0440/5687/1062/files/vexedamaxulabum.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/89554836592.pdf
    • https://cdn.shopify.com/s/files/1/0434/3287/0037/files/weekly_tax_table_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/1083/4077/files/import_script_to_tampermonkey.pdf
    • https://cdn.shopify.com/s/files/1/0440/1889/2965/files/aptis_mock_exam.pdf
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/zandalari_engineering_guide.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_off000061e2.bin
6c2849d07598421bfd9f07c0e88806de2a5edbe44565c6839126ac1c79131462
pdf-font-stream PDF embedded font (sfnt) at offset 0x61E2 5976 bytes
font_01_sfnt_off00007608.bin
07e3265b81335814eff735c34d177e7a0702a5ad088ec1e29627638503ec179d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7608 10380 bytes