Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef9efff90752141…

MALICIOUS

PDF

43.5 KB Created: 2020-08-31 05:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 647c8b724ad79bf31d04efecc48bf900 SHA-1: 8238e0087ad8562846c69f48ece836a6775487b1 SHA-256: 2ef9efff90752141e619f4ad5fec20f880e511a1c65f6a45bc0ea29f78dbf087
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as a guide for a phone action. It also features a large number of embedded links to other PDF files, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is https://ttraff.cc/wix?keyword=how+to+screenshot+galaxy+s8, which is likely used to redirect the user to a malicious site. The presence of numerous benign-looking PDF links alongside the malicious one is a common social engineering tactic.

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=how+to+screenshot+galaxy+s8
    • https://static.usrfiles.com/ugd/f7fbc8_ff666557ee2642dbabd80f2e567fb252.pdf
    • https://static.usrfiles.com/ugd/79e0dc_a70ae81eedb947db876da3ebd1d4dec9.pdf
    • https://static.usrfiles.com/ugd/735189_98df9a9c122a4d3dba6b2108e1d6a21b.pdf
    • https://cdn.shopify.com/s/files/1/0431/2583/3884/files/receita_de_chimango_de_forma_simples.pdf
    • https://cdn.shopify.com/s/files/1/0431/0115/9585/files/1969_camaro_assembly_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/5327/6574/files/sodilexamibojajibabaf.pdf
    • https://static.usrfiles.com/ugd/eb5a6a_3f2427642e784c019b976398dcda5dc2.pdf
    • https://static.usrfiles.com/ugd/0d089b_c2c2bd48d8f74f7f94b37cc4e79268c9.pdf
    • https://static.usrfiles.com/ugd/43d598_762156f986ec4d4995b5390cd2b5c6ce.pdf
    • https://static.usrfiles.com/ugd/225520_04f040d074a24e1e8764502599ffc9f7.pdf
    • https://static.usrfiles.com/ugd/19ce5d_7b857b7f20e34e0dba0018bcd587665a.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_1213eae0b07e4b7786830576e9d4c3e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_5b1b6fdcb2ee450ab16f69ee811afecf.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_off000068df.bin
f132b4a6fdc03d44ff2030dae973977521b69116af2007e394ff06c0108ba21a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68DF 5476 bytes
font_01_sfnt_off00007b8a.bin
e0c04c0d93e57c22ea0889bb72a224f4d256d8b6819c78584e7b69b6df27436b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8A 10972 bytes

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