Malicious PDF — malware analysis report

Static analysis result for SHA-256 405b957ddcb656b9…

MALICIOUS

PDF

38.1 KB Created: 2020-08-19 14:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 060bce3a2e49a3c6921387bcb9570973 SHA-1: 300f8740da891503426e73b20e267bc5067674d3 SHA-256: 405b957ddcb656b917ffd0766f8492641509c9a835ddfeec93005de456ab1641
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Lloyd's list law reports' and the wkhtmltopdf application, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content. The primary malicious URL is ttraff.ru, which is flagged as a malicious redirector.

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/pify?keyword=lloyd%2527+s+list+law+reports
    • http://xegenikam.cathycarterartist.com/uploads/1/3/0/7/130775565/e747448a7076.pdf
    • https://cdn.shopify.com/s/files/1/0433/5068/7903/files/pivutupaxubawape.pdf
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/boxibimevonozu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0835/files/93786020821.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/99209796770.pdf
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/rerunivonubijewuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/5226/1795/files/42028067937.pdf
    • https://cdn.shopify.com/s/files/1/0432/4520/7714/files/90315054147.pdf
    • https://cdn.shopify.com/s/files/1/0433/4813/2008/files/ccna_book_arabic.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_off0000589e.bin
0a0d2c87b6a474cf620cd4d56c2d5c3719824e3ed583af4cefe00e380c8a15e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x589E 5120 bytes
font_01_sfnt_off00006a3e.bin
0cb4b3ba60499711a6b393b82a78e393e682c749d115e10a11671311ce808a65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3E 9852 bytes

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