Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d1a8839c9033fed…

MALICIOUS

PDF

63.2 KB Created: 2020-08-13 22:03:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7464fcafc120aa2d3b214d2b91d4a621 SHA-1: 4ac2e16e662fc1554f4d2670351d75f55b548a59 SHA-256: 9d1a8839c9033fedb53c91d6d261c44363c8364f8d6cec3cc2343daecd391613
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, pointing to 'https://ttraff.cc/pify?keyword=risk+management+plan+clinical+trials+template'. The document body, though heavily obfuscated, also contains this URL, suggesting the document's primary purpose is to trick users into visiting this malicious link. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to obscure the malicious 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/pify?keyword=risk+management+plan+clinical+trials+template
    • http://files.oastexas.com/uploads/1/3/0/7/130738836/folumomifovar.pdf
    • http://lutobi.taniasarthouse.com/uploads/1/3/0/7/130776394/mamugi-gipuzit-kelatek.pdf
    • http://files.ourladyoftheadirondacks.com/uploads/1/3/0/7/130775471/4371637.pdf
    • https://cdn.shopify.com/s/files/1/0430/3467/3301/files/58213318079.pdf
    • https://cdn.shopify.com/s/files/1/0435/9539/9325/files/wosawuzutilute.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nijudesiko.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/67176512744.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/western_comics.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/32491072766.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/83473521471.pdf
    • https://cdn.shopify.com/s/files/1/0428/0506/7943/files/vowadixaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jegatakufiritejat.pdf
    • https://cdn.shopify.com/s/files/1/0438/2674/1405/files/32913253129.pdf
    • https://cdn.shopify.com/s/files/1/0435/3402/4855/files/biomaterials_a_basic_introduction_qizhi_chen.pdf
    • https://cdn.shopify.com/s/files/1/0430/7740/2778/files/wutarojikadenelefesupumi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2781/4805/files/fallout_4_check_companion_affinity.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_off0000ba63.bin
a16a5a6e73ee0851360c67465ddc2edd821d515df757d103c83e01dc38f57cad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA63 5324 bytes
font_01_sfnt_off0000cc6a.bin
beae720e7a6ee9d13d9270f8639208d8ff7e781c486674509218ed85a9e9b5e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC6A 10312 bytes

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