Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc9d33694afba628…

MALICIOUS

PDF

41.5 KB Created: 2020-08-30 02:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4ca64b4bd98bf2e017145195789cdf2 SHA-1: 82dd488da6431a83b467f04fede4a61a2438e976 SHA-256: cc9d33694afba628b8aa8203e1fbaecc3b00674922ddb02ec93cd45b65ed3424
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded links, including the primary one to 'ttraff.com', are likely designed to lure users to malicious sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the structure of the PDF itself suggests a delivery mechanism for malicious content.

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=what+does+arabinose+do+in+pglo+lab
    • https://static.usrfiles.com/ugd/b8c837_14123bb2b7df4f5b8bded97bc6a65de2.pdf
    • https://static.usrfiles.com/ugd/857e61_e37091cd8dce4b55b04f07ed411c5505.pdf
    • https://static.usrfiles.com/ugd/9b5f63_89517231a45f48039b992f925632a83c.pdf
    • https://static.usrfiles.com/ugd/b8c837_bab4fb75bd07401dbd7e7bf39f9660f0.pdf
    • https://cdn.shopify.com/s/files/1/0437/8220/9698/files/37259346633.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/17836790095.pdf
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/wixozonarujigop.pdf
    • https://cdn.shopify.com/s/files/1/0430/7507/6258/files/chhota_bheem_song_please.pdf
    • https://cdn.shopify.com/s/files/1/0432/6634/3072/files/delipetugu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0151/0045/files/il_deductions_and_adjustments_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/7729/6543/files/58698251835.pdf
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/41590185913.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_off000064b6.bin
733eeede57707ade3fd35453026d9c17d93b80945da1d161a6e36e0c584a6caf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B6 5372 bytes
font_01_sfnt_off000076f9.bin
8391514d40ed4d1ff471654669ef34043181dec680c3e4a71a9d5545577c59e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76F9 10096 bytes

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