Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb76dfe09128700…

MALICIOUS

PDF

42.2 KB Created: 2020-09-01 00:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 938a07a90d525610a566f568e6d1be9b SHA-1: fb599371b940edb3cdf734f2c08cb9d3345253c3 SHA-256: eeb76dfe09128700dd3b990a4ab7c47dc0116fe86d2685b619a9ab1c3e373412
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=schindler+escalator+design+guide', which is flagged as malicious. This suggests the document's primary purpose is to trick the user into visiting this malicious URL, 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.ru/wix?keyword=schindler+escalator+design+guide
    • https://static.usrfiles.com/ugd/73c254_12f18224acff458a8fd5705ddad7af59.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a8e8b88ce3f42ecaa4fc7149577fd9a.pdf
    • https://static.usrfiles.com/ugd/0a51c1_7a82c84583ca480dbf1e6e044842d822.pdf
    • https://static.usrfiles.com/ugd/e643da_dc3d8178f47d45dea2ea432c7a01e178.pdf
    • https://static.usrfiles.com/ugd/e643da_a3666a89a2494393a258ada170043a30.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9488/files/watiledaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31968244380.pdf
    • https://cdn.shopify.com/s/files/1/0435/7367/4142/files/jelirimerozamerejukakuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/25223545302.pdf
    • https://cdn.shopify.com/s/files/1/0437/5108/0087/files/beyond_compare_diff.pdf
    • https://cdn.shopify.com/s/files/1/0435/7141/3151/files/zirudokuwozupabajiju.pdf
    • https://cdn.shopify.com/s/files/1/0437/1149/6347/files/kia_optima_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12247178291.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_off000066b5.bin
f7b22be3a76d7fe8c6a507ff33a80989f234d72b9d42b4f74eb173417b92c70e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B5 5304 bytes
font_01_sfnt_off000078b2.bin
434b7ec88c4620971e544cba75e2a28ab1c1b8d368eb8097398075ca037e9b5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B2 10408 bytes

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