Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a6fe9c881dbb9e3…

MALICIOUS

PDF

40.6 KB Created: 2020-08-16 14:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82c5c8367fc5f13d5f21d1a11e7a48fd SHA-1: bbcc450aaaf6136dfa8225b0e844c5b46c043a61 SHA-256: 2a6fe9c881dbb9e3f146c74ba57238d57be7ecf8732e8fea03ca6d07d539c7e0
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to a URL designed to mimic a search result for 'ebay uk app free for ipad'. This URL is intended to lure users to a malicious site. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO poisoning attempt to increase visibility of the malicious content.

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=ebay+uk+app+free++for+ipad
    • http://files.longsightnursery.co.uk/uploads/1/3/0/7/130776054/a9fb4517c8d.pdf
    • http://lugisot.stthomasaquinascharnwood.com/uploads/1/3/1/6/131606938/ec9f38e9b.pdf
    • https://cdn.shopify.com/s/files/1/0444/3288/3879/files/75977117824.pdf
    • https://cdn.shopify.com/s/files/1/0433/6641/6549/files/7988421599.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/61395287864.pdf
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/wopiminejewubel.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/ratofifulumajonimerarozo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/pafoponuto.pdf
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/fenajolaxifa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8730/6658/files/how_to_calculate_mean_deviation_for_grouped_data.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/56177781259.pdf
    • https://cdn.shopify.com/s/files/1/0432/5366/1851/files/banerux.pdf
    • https://cdn.shopify.com/s/files/1/0448/2508/4065/files/download_netflix_movies_to_computer.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_off000061f2.bin
1070132292b50c934bb9b5f7c214c06f1e9489ce5277c4bfe56d3317e4be2781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F2 5088 bytes
font_01_sfnt_off0000735c.bin
d751ad74e2cc13ede754cf0393a1be3ba143e46c440b0a74b6fe5e616efaeb77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x735C 10060 bytes

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