Malicious PDF — malware analysis report

Static analysis result for SHA-256 f45ca5b1ae78122d…

MALICIOUS

PDF

55.4 KB Created: 2020-08-22 01:13:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 788456fd06b6530dd118c7e4d658db5c SHA-1: eefc7cb4926bf2989ac6518c8153a2040bdaf145 SHA-256: f45ca5b1ae78122d82ac65cd5206ce5f3a54d882f5a6ac36dc94953ac7201eda
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=urosepsis+treatment+guidelines+idsa'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent. The primary goal appears to be redirecting users 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=urosepsis+treatment+guidelines+idsa
    • http://jirak.pensionplanningsolutions.com/uploads/1/3/1/4/131409508/8e77eb348.pdf
    • http://files.dream-alive.com/uploads/1/3/0/7/130738943/gabuma_dovut_ladibeji.pdf
    • https://cdn.shopify.com/s/files/1/0432/7152/0414/files/asme_section_viii_pressure_vessels.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/automotive_repair_books.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/59761206516.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/nuvapotov.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/anisotropic_conductive_film.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/waterboss_model_900_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/1112/6942/files/76977935744.pdf
    • https://cdn.shopify.com/s/files/1/0436/5176/0281/files/agenda_21.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/swot_format.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9195/files/85996659611.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/hbl_online_challan_form_bise_lahore.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/cantabria_labs_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/gekoxo.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_off00009adb.bin
0908d786bcd61d588ac85d39e851667d6a2b9ac1a2bbb688f0888c169d79f901		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ADB 5272 bytes
font_01_sfnt_off0000aca9.bin
2b08a12c5cb1dd5b2383e410576cf18b15b417964e8d770886673b64095e8570		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACA9 10488 bytes

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