Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1c329b80fe6af2…

MALICIOUS

PDF

43.8 KB Created: 2020-08-01 07:25:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff2ce76ee11c437db0a4fb9e2dd4f40e SHA-1: 5fd24b16501c7ffaa8e2139e8797bcd56ad97472 SHA-256: be1c329b80fe6af283c263d57887a1b8e0dbb9f05232a948069d849553e03798
120 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, with the primary redirector URL being https://ttraff.com/pify?keyword=avast%252A.+lijit.+com. This indicates a link farm or redirection strategy designed to lead users to malicious content. The presence of numerous Shopify-hosted PDF links further supports the link farm heuristic. The document body contains obfuscated text and URLs, consistent with attempts to evade detection.

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=avast%252A.+lijit.+com
    • http://files.starrpilatesla.com/uploads/1/3/0/9/130969265/wetekud_vazuteti_faderowagusiw_gumozogumuboxi.pdf
    • http://files.nelsonnieves.com/uploads/1/3/0/8/130814644/586a02df0.pdf
    • http://files.jamesgreyinteriors.com/uploads/1/3/1/3/131379622/8b884672a0bce11.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fejatomamegebuwugibuvu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/kufakezojunuz.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/printrbot_simple_metal.pdf
    • https://cdn.shopify.com/s/files/1/0431/5516/1252/files/38130630732.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3281/files/lijorejidinawemife.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/xitadonufanugude.pdf
    • https://cdn.shopify.com/s/files/1/0428/7476/5475/files/xojutubazudiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/59191027993.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4492/files/digital_design_mano.pdf
    • https://cdn.shopify.com/s/files/1/0432/7335/5419/files/vasexubosuf.pdf
    • https://cdn.shopify.com/s/files/1/0435/8583/1070/files/75666490898.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_off0000654b.bin
2d974eae526ecd6d29538b6e3904a6d55190dec9e065a43502260739960808c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654B 5072 bytes
font_01_sfnt_off000076a0.bin
687c160601e8957014c8a2c888d71f19ad0e63b1f08eeaef86c44a515e0779dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A0 14052 bytes

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