Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3a0a8af23f6dd46…

MALICIOUS

PDF

45.6 KB Created: 2020-08-12 04:14:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57db32666f027a8a072966508c2c9bc1 SHA-1: f0f2ca1976858aed5ede95cc395e983272f0c744 SHA-256: f3a0a8af23f6dd46cd65b21b56817da91f535c199f9eeaaec89f4f107d229a5d
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains the same URL and references a PDF document title, suggesting a social engineering lure. The file also contains a large number of links to other PDFs hosted on Shopify, likely part of a link farm to improve SEO for malicious content.

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/pify?keyword=argumentos+a+favor+da+pena+de+morte+pdf
    • http://files.brettdickdpt.com/uploads/1/3/2/3/132303219/xajibewizeji.pdf
    • http://files.simonikigweba.com/uploads/1/3/1/3/131398177/wagekakapuzowi.pdf
    • http://bonogip.gametimeranch.com/uploads/1/3/1/4/131453329/runusa_rubopojo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7985/files/3650704119.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/synonyms_words_in_english_with_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0430/2969/2577/files/letunulaviromu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/66516071304.pdf
    • https://cdn.shopify.com/s/files/1/0431/7223/3376/files/wadez.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/sisuxab.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4754/files/75591743683.pdf
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/define_neoliberalism_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0437/5828/9045/files/bijeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3557/files/2036362991.pdf
    • https://cdn.shopify.com/s/files/1/0427/8163/8812/files/59187039372.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/71091138549.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_off00007010.bin
fe14bcbf975c178e7fe28a0169eee8914a82edff284aa63dfc80af33e4783af7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7010 5376 bytes
font_01_sfnt_off00008249.bin
b0403f145e58ac4e0b7cab7f69d97813cb95715487d80a33f842d1e7ced1fb6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8249 12260 bytes

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