Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7b4a7b175cbf8b…

MALICIOUS

PDF

35.2 KB Created: 2020-08-30 12:59:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54e0147cf9a35a9dc3c590b647e1cdf8 SHA-1: 325efdcf23184ba1f24402570ed1e4fb0f424ea9 SHA-256: bf7b4a7b175cbf8bd404b6c2c2731cdacf1c71fa860cdcfe8db8be1a21f043c1
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=simbologia+neumatica+y+electroneumat'. The document body, though partially corrupted, includes this URL and a list of other PDF links, suggesting a link farm or redirection tactic. The primary intent appears to be directing the user to the malicious ttraff.com domain.

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.com/wix?keyword=simbologia+neumatica+y+electroneumat
    • https://static.usrfiles.com/ugd/c83fdb_8c2c2c3e1d77454a845f6a79f2c8dc7b.pdf
    • https://static.usrfiles.com/ugd/cb5dea_c77f485db9764de5916e82327e8cc3ce.pdf
    • https://static.usrfiles.com/ugd/23e9be_2d93ce6c7a9043c48921d3c60d46168f.pdf
    • https://static.usrfiles.com/ugd/b8c837_63e4e49511cc4012abeed03232ce7efb.pdf
    • https://static.usrfiles.com/ugd/b8c837_fe9d8082320a4ceab11390cfd2e64385.pdf
    • https://static.usrfiles.com/ugd/b8c837_43fe0ef8dcfa4db6a0b40809eaddfa02.pdf
    • https://static.usrfiles.com/ugd/173616_8b2b418523de48419c9d90733096cde8.pdf
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/suzigodufikamupifeli.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9221/files/pdfmake_angularjs_table.pdf
    • https://cdn.shopify.com/s/files/1/0440/1161/8462/files/vebiropemekezenevetaso.pdf
    • https://cdn.shopify.com/s/files/1/0430/1488/1433/files/collins_easy_learning_spanish_words.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5396/files/13566976102.pdf
    • https://cdn.shopify.com/s/files/1/0440/0028/0734/files/vanejuvusunasukivumuvet.pdf
    • https://cdn.shopify.com/s/files/1/0430/7520/7322/files/malaxuz.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_off00004a3e.bin
05fb8c36d7703c10abcba2452c822a1b6011254b8a8bb0a37f0f7d03cbc05d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A3E 5288 bytes
font_01_sfnt_off00005c25.bin
4cd22a3e7a988107d8829652575a7c68a61bd01ce8a3fe8cdebc3d267f791c43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C25 10560 bytes

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