Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4ae69c03e1c6960…

MALICIOUS

PDF

39.5 KB Created: 2020-08-29 21:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7a46936214eb4a2aadb38d97498fcdb SHA-1: db211f0f214daf3cbe4038bbf7dd6912a7442128 SHA-256: c4ae69c03e1c696041a790975ee15dcc1e25d2b856d1080bde38b5b738c41526
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One of the primary links, https://ttraff.ru/wix?keyword=badtameez+dil+mp3+pagalworld+downloa, is flagged as a malicious redirector. This suggests the document is designed to lure users through SEO poisoning or phishing tactics by redirecting them to malicious sites. No scripts were extracted, and the document body is heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/wix?keyword=badtameez+dil+mp3+pagalworld+downloa
    • https://cdn.shopify.com/s/files/1/0438/3368/8226/files/ginupakakuvolafaxutiru.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/all_technical_drawing_symbols.pdf
    • https://cdn.shopify.com/s/files/1/0437/2971/5354/files/nfl_spielplan_18_19.pdf
    • https://cdn.shopify.com/s/files/1/0435/5919/0689/files/21561306055.pdf
    • https://cdn.shopify.com/s/files/1/0461/6716/3032/files/included_sides_and_angles_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/2200564998.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5738/files/dilakumezuminofuwowa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/vejiga_neurogenica.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3434/files/deloitte_financial_reporting_insights.pdf
    • https://cdn.shopify.com/s/files/1/0429/6428/7651/files/67173099046.pdf
    • https://cdn.shopify.com/s/files/1/0434/3899/7669/files/d_d_5e_character_sheet_adventurers_league.pdf
    • https://static.usrfiles.com/ugd/2c608b_380ed5687dee4d5abf1c0a6805dc8b61.pdf
    • https://static.usrfiles.com/ugd/b8c837_33a20c2671d049069480350bf5f2db69.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a12b8c2a6b14c78b162a8183953af0f.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec9e617d6fa0403a8e6f8d8fe381c119.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_off0000510c.bin
1293f903d02aaa4a978298e454dff4e91932f6921f5f097dfdff78a86f29ad5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x510C 5456 bytes
font_01_sfnt_off000063a2.bin
9786feadbf1bda6d7eafe47990005aad29da967b41899bfb13c3939adffbf166		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A2 14404 bytes

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