Malicious PDF — malware analysis report

Static analysis result for SHA-256 43b445a7d031a2cb…

MALICIOUS

PDF

40.2 KB Created: 2020-09-04 08:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b5e708cc696f7699ff245287fbbc56f SHA-1: 2c8b09ec7b5f35f4ef929f0b3a2ba770115883b9 SHA-256: 43b445a7d031a2cbdbd332ed95874a866e379beea3c0bf444d89144821e3a96d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.club'. The document body, though heavily obfuscated, contains this URL and a reference to 'Argentina Iceland TV guide', suggesting a lure. Additionally, a PDF link farm heuristic indicates the presence of numerous external PDF links, with 'cdn.shopify.com' hosting many of them, likely 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.club/wix?keyword=argentina+iceland+tv+guide
    • https://cdn.shopify.com/s/files/1/0440/0021/5190/files/nezetos.pdf
    • https://cdn.shopify.com/s/files/1/0437/0307/4984/files/topuperalerov.pdf
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/fasuwemimubobegugunagiges.pdf
    • https://static.usrfiles.com/ugd/e56fe2_5fe75179ec7e42a589a0811d4a9a3677.pdf
    • https://static.usrfiles.com/ugd/0789d5_bd05e992b95f47a0b38992fd24c1769b.pdf
    • https://static.usrfiles.com/ugd/b8c837_3242fbb5d0d34c3583bbbcd71ecc4925.pdf
    • https://cdn.shopify.com/s/files/1/0435/1816/5144/files/1554807599.pdf
    • https://cdn.shopify.com/s/files/1/0459/9899/7663/files/6074538437.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/bharat_acharya_8085_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7910/files/98656028707.pdf
    • https://static.usrfiles.com/ugd/e4a001_1438c4e5e6a04530876ea054c8039cbe.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9cfdad9411f46a3af873fc3decc710c.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_off000060c6.bin
c6428d00cf69fc10eee46f0739566c4d3fc134c7386b6690b40ab8128d63bef0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C6 4976 bytes
font_01_sfnt_off000071c8.bin
f5efaf4f3ddfde8aaff11ff227d0c768949e6453cf0557e83f90d3683d492951		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71C8 10076 bytes

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