Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1035912e95bdaaa…

MALICIOUS

PDF

58.0 KB Created: 2020-08-31 00:22:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fa00108b9f410308c746d0e58a45cf7 SHA-1: 9a09aed0a0fdba3a1e99b968838c8228c435ed0c SHA-256: c1035912e95bdaaa6265579f830d177a4d60064e912fb0285b020911e90f412f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One of these links, 'https://ttraff.com/wix?keyword=status+brucia+infinite+warfare', is identified as a known malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or credential harvesting.

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/wix?keyword=status+brucia+infinite+warfare
    • https://cdn.shopify.com/s/files/1/0432/0519/7985/files/daronuwurofulup.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/nazopidudule.pdf
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/jeffrey_archer_the_new_collected_short_stories.pdf
    • https://cdn.shopify.com/s/files/1/0429/2739/0887/files/88250231796.pdf
    • https://cdn.shopify.com/s/files/1/0450/7897/0533/files/math_worksheets_grade_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/72965406635.pdf
    • https://cdn.shopify.com/s/files/1/0440/3747/2421/files/wowanikavepaferimixaga.pdf
    • https://cdn.shopify.com/s/files/1/0428/9930/8700/files/tasodizudesi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/xogunapanidiwagotifem.pdf
    • https://cdn.shopify.com/s/files/1/0437/4469/0337/files/bimepuzebur.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8545/files/osu_rafis_skin.pdf
    • https://cdn.shopify.com/s/files/1/0437/1673/9222/files/10311649109.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/xokuzopizikukilox.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/34257771433.pdf
    • https://cdn.shopify.com/s/files/1/0435/8724/0093/files/realidades_1_capitulo_1a_practice_workbook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/0795/9452/files/2479931511.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_off0000a614.bin
f5b2f849696ed2f81a70a5a79613d548ba1603a27ad1e460fc8353d70875594b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA614 5176 bytes
font_01_sfnt_off0000b7c9.bin
079082c290eb44e67485130dc98e51a68522145174755e1b4d9629f871b7cc83		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7C9 10208 bytes

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