Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ffe2c1abe5f426a…

MALICIOUS

PDF

42.0 KB Created: 2020-08-29 04:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3a1539d2e5e9485e28d51f616d7c3f9 SHA-1: 80b04e83b21706f755cf195f1f77b4ac902d2c35 SHA-256: 8ffe2c1abe5f426a450a605c3755d58930ed89a456a29825a46f99b349dd67df
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains with seemingly random filenames, suggesting a link farm designed for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, also contains this redirector URL, reinforcing the malicious intent. The primary goal appears to be to lure users into clicking these links, potentially leading them to malicious websites or phishing pages.

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.com/wix?keyword=pixie+plus+sewing+machine+how+to+thread
    • https://cdn.shopify.com/s/files/1/0435/8373/3921/files/tuwapopusemejomaripase.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1563/files/mera_badshah_hussain_hai_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0434/6344/2598/files/vaduritederurinaguwi.pdf
    • https://cdn.shopify.com/s/files/1/0439/1088/9624/files/film_beautiful_vampire_sub_indo_360p.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/94752915535.pdf
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/jilenu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2886/5446/files/zimeririlusog.pdf
    • https://cdn.shopify.com/s/files/1/0463/0675/4717/files/34287529197.pdf
    • https://static.usrfiles.com/ugd/b8c837_23cc11c78f5a41a39b4f3c4a94a46175.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb300e67e18847b8bad37b61f7f30ea1.pdf
    • https://static.usrfiles.com/ugd/b8c837_1526747ca75a40349b438c9bd8466d4b.pdf
    • https://static.usrfiles.com/ugd/b8c837_018c0f3770224496953b0396ff042ee8.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb335737a47b4a68aba77d7ba136fa2a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d737563b42a04be5abeee63692d8e53d.pdf
    • https://static.usrfiles.com/ugd/b8c837_e407f7480ea944ae9fee65e7533c5980.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_off000064c0.bin
07f557718789cb7987b85d4cdc696919c98f8a750903df38b2c8c493fdaf3268		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C0 5648 bytes
font_01_sfnt_off000077d1.bin
3a883309238c228ca6557a9a2e3559043624d421ce88d625a26cb97776fff6e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D1 10380 bytes

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