Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf00ee18eef373b…

MALICIOUS

PDF

46.1 KB Created: 2020-08-31 15:46:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f7857a141a5a225a4cbe3fa07eac7a1 SHA-1: 447d5b04feddefb5e4f93cf1bbd7662a67967821 SHA-256: 1cf00ee18eef373b44002b89599e24e27f9a2b17a9ce51a0bdd1761067e78096
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is the primary indicator of malicious intent. The document body, though heavily corrupted, appears to contain academic-sounding text and embedded URLs, suggesting a lure to trick users into clicking the malicious link. The link itself leads to a redirector that likely hosts further malicious content or phishing pages.

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=ciencias+formales+y+f%25C3%25A1cticas+definici%25C3%25B3n+clasificaci%25C3%25B3n+diferencias
    • https://static.usrfiles.com/ugd/f65518_6947e00e4dbc4004836e0d99c3074760.pdf
    • https://static.usrfiles.com/ugd/b8c837_60517da9f62944fd91ab3290b8e743aa.pdf
    • https://static.usrfiles.com/ugd/5ed537_b161dfa9558a4fef8dc1089d61a16c63.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_65327a5ddb4a417f9b547732070caa84.pdf
    • https://cdn.shopify.com/s/files/1/0431/9671/1069/files/tukogipavagewesanuluxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8106/files/aikido_filosofia.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55628578329.pdf
    • https://cdn.shopify.com/s/files/1/0453/9786/8712/files/82396788578.pdf
    • https://cdn.shopify.com/s/files/1/0438/5089/1424/files/conducting_research_in_psychology_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1032/files/47420106940.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/human_anatomy_atlas_3d.pdf
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/fuxawose.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_off000070fe.bin
cc96f0ea2130ecc43e08239442191789851c2cae8b6b9174d3a8a43095946230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70FE 5544 bytes
font_01_sfnt_off000082f6.bin
dbd085e5e4147a684fa4a68d7fa7757b2c320fa74f814f2be0624529dcdb6743		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82F6 11504 bytes

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