Malicious PDF — malware analysis report

Static analysis result for SHA-256 a32130e5668edfb0…

MALICIOUS

PDF

45.6 KB Created: 2020-08-20 23:42:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77daa29c0a09cddac70ef00e6c23a431 SHA-1: b4969218dfa2e2ae70cac1dd4dadd7508a383bb5 SHA-256: a32130e5668edfb0508a7cae344176991ba74ad9a8ace14d3102f5c5e0fba62f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Retirement planning in malaysia pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of a link to malicious infrastructure, and 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, likely for SEO manipulation or to hide the malicious destination.

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/pify?keyword=retirement+planning+in+malaysia+pdf
    • http://files.smaresc.com/uploads/1/3/0/8/130814208/6049425.pdf
    • https://cdn.shopify.com/s/files/1/0445/4989/8399/files/maslow_hierarchy_of_needs_theory.pdf
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/jawurisibuliti.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/gukikide.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/99744671494.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kixekitigatozodevejale.pdf
    • https://cdn.shopify.com/s/files/1/0428/9147/7159/files/furiously_happy_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8315/3056/files/leniso.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/zunilemilifowovo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/40609646756.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006575.bin
4b9b20185737eed9203721f463225ac35e56bffefe95a839165f3c65bf17d3f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6575 5148 bytes
font_01_sfnt_off000076db.bin
8ae57a1365f4726b709895c97a8da1ca76f91543f45b7cb01d3da874156853bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76DB 10860 bytes
font_02_sfnt_off00009bdf.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BDF 4324 bytes

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