Malicious PDF — malware analysis report

Static analysis result for SHA-256 c064ed204bfaeb8e…

MALICIOUS

PDF

45.2 KB Created: 2020-08-23 20:31:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5a41bd1b575640b0f3b3275ec02f0fc SHA-1: 69923da189a033f5069d0fc72359eeba333b10e4 SHA-256: c064ed204bfaeb8e5cbfcf5744e311a24e39310acf89cc454f827d28735a0766
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the same text as the URL parameter, suggesting a lure. The PDF also hosts a large number of external links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/pify?keyword=worrying+fusion+of+information+and+entertainment
    • http://xixuje.purposeqi.com/uploads/1/3/2/6/132681946/5755080.pdf
    • http://files.spanawaylakemonstersbbc.com/uploads/1/3/2/6/132695200/a9e35270.pdf
    • https://cdn.shopify.com/s/files/1/0437/2440/6933/files/87245782530.pdf
    • https://cdn.shopify.com/s/files/1/0432/6329/5650/files/auto_tune_efx_crack_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/44307579800.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/tejejibezuwamaremoje.pdf
    • https://cdn.shopify.com/s/files/1/0436/4324/0606/files/39656450249.pdf
    • https://cdn.shopify.com/s/files/1/0433/0949/8536/files/dasewuguwujeneveximeni.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jivanup.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/66885669178.pdf
    • https://cdn.shopify.com/s/files/1/0435/6246/7489/files/abbreviations_worksheets_for_2nd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0434/8451/2406/files/gunizelixig.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000677c.bin
0d4a0d028ef67be0836441d395326707d88b0ae03e12b6dd6098c7c2e70a4d78
pdf-font-stream PDF embedded font (sfnt) at offset 0x677C 3308 bytes
font_01_sfnt_off00007352.bin
ddb514407ee6c9a8d5913aa301e9e77c649602750dc86bc1398e9f8f168709b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7352 5312 bytes
font_02_sfnt_off0000855c.bin
0f18717a21100c830c8595eabcc6202b94dd1accdde92c06fc60baeb5f1efc3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x855C 10024 bytes