Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d3005033e6bf96…

MALICIOUS

PDF

53.4 KB Created: 2020-08-07 07:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41adb6f07bb7e78e4141de68f13ec432 SHA-1: 75baf3eda00e4cb9f7c7aab8c5559a04bafdfd40 SHA-256: 29d3005033e6bf9604101c07e6f76bee56953a527e4e58dd624f6fb8391eac39
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation to increase visibility of the malicious link.

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=probability+tree+questions+pdf
    • http://files.womensbalancehealth.com/uploads/1/3/0/7/130739212/1b7e5fa52.pdf
    • http://jeteneva.danielstorage.com/uploads/1/3/2/3/132303035/27c3a44.pdf
    • http://files.callkarlykapur.com/uploads/1/3/2/6/132695554/mosefosorid_xafakaza_kozofobudiw_vesuloxopuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0374/8260/files/vudutowefinuvukox.pdf
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/79632573421.pdf
    • https://cdn.shopify.com/s/files/1/0435/5103/1447/files/sewuxosa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0715/6128/files/2907181239.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/femepotufitaxaturu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1908/9566/files/liroxiwekajariwev.pdf
    • https://cdn.shopify.com/s/files/1/0430/0288/8351/files/26601881808.pdf
    • https://cdn.shopify.com/s/files/1/0428/1961/6935/files/juwetiwud.pdf
    • https://cdn.shopify.com/s/files/1/0436/9701/2890/files/furinola.pdf
    • https://cdn.shopify.com/s/files/1/0431/1334/9273/files/96069886958.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3399/files/39561044324.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/tujeti.pdf
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/66960143861.pdf
    • https://cdn.shopify.com/s/files/1/0432/9570/3204/files/nonifu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2475/files/vanozelolojigumodu.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_off0000895e.bin
6b62909756d8cabdd9a134daa059acb5dabd5ff961e789e52e6002cd40cb27f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x895E 5404 bytes
font_01_sfnt_off00009bc7.bin
473e05d05ecc3a8bbaea6f4d6b3109fc8a913b8c3eb02b35c91ceddece3eb649		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC7 13780 bytes

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