Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7e6b962cfee29fd…

MALICIOUS

PDF

39.5 KB Created: 2020-08-31 23:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40dfd8d58c88929a38738b0eaa7c070b SHA-1: 4ca702d8e57354f609c706745c37df54eb94099b SHA-256: b7e6b962cfee29fdc0b97eb19caea7501e83846f713f058109150109504c4730
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking PDF files hosted on Shopify. This suggests a phishing or redirection attack where the primary goal is to lead the user to a malicious destination via the identified redirector.

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.cc/wix?keyword=notepad+plus+sql+formatter
    • https://cdn.shopify.com/s/files/1/0428/9822/7353/files/41792620143.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/10471829435.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/28079398718.pdf
    • https://cdn.shopify.com/s/files/1/0461/5710/3267/files/vexukolakapedabi.pdf
    • https://static.usrfiles.com/ugd/b8c837_c35bd179ac7a4036a742c1aa8f7f46b5.pdf
    • https://static.usrfiles.com/ugd/5e81b9_eab5876697304f9589722bbc2db40578.pdf
    • https://static.usrfiles.com/ugd/2ac701_394c0cbbeb8842eebe7d37816d91ac1c.pdf
    • https://static.usrfiles.com/ugd/e3834b_98c1e94a14d74d13a0fdba69b47bc489.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4e0da035d4f48fab93217cb11bd96d3.pdf
    • https://cdn.shopify.com/s/files/1/0435/8776/4387/files/44465394222.pdf
    • https://cdn.shopify.com/s/files/1/0463/0623/0434/files/tibesok.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/jadomiroxifimew.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/les_catilinaires_amlie_nothomb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1587610690.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8617/files/1156200921.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_off00005a6e.bin
2b9c0739e51a5c48c392e93f529f55da7f81ffbec8f2dbf9d7abdaebd7b7ac95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6E 5280 bytes
font_01_sfnt_off00006c51.bin
6341a9c518668dfa5e9e7c877f11521891405ae13e981be48259b568ca650bb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C51 10920 bytes

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