Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4076e03ca0b755e…

MALICIOUS

PDF

36.8 KB Created: 2020-07-31 11:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50c9f04aac26715deb73ad71ec84ae9a SHA-1: 3f22a4d847ef4afc188f472831c1d3f496e81538 SHA-256: a4076e03ca0b755ef6312211651995880c67df3ea320e6a42023a98498492e5c
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, many of which point to Shopify domains but ultimately redirect to the malicious domain ttraff.ru. This indicates a link farm or redirection attack designed to lure users to malicious infrastructure. The document body text, though partially garbled, includes keywords related to 'pdf' and 'english', suggesting a lure.

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=barashada+luuqada+english+pdf
    • http://files.ks-image.com/uploads/1/3/1/0/131070374/4097371.pdf
    • http://files.greaterwayfaithworshipcenter.org/uploads/1/3/2/3/132303012/7588423.pdf
    • http://files.weeblackbook.info/uploads/1/3/1/6/131606360/buzekup_kijasudej_xubofojepe_pozod.pdf
    • http://files.greaterwayfaithwo
    • https://cdn.shopify.com/s/files/1/0434/2549/7250/files/majixare.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40035930655.pdf
    • https://cdn.shopify.com/s/files/1/0430/7776/3226/files/76877249452.pdf
    • https://cdn.shopify.com/s/files/1/0438/9899/4856/files/79593784295.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/furupokexopaxabisovijuwu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/52772230262.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5526/files/xowubekudumuzifena.pdf
    • https://cdn.shopify.com/s/files/1/0437/2758/5445/files/dejonudukiratudogot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdf
    • https://cdn.shopify.com/s/files/1/0429/6284/5859/files/6134022786.pdf
    • https://cdn.shopify.com/s/files/1/0439/6879/0686/files/nikakig.pdf
    • https://cdn.shopify.com/s/files/1/0431/3664/7317/files/murowipalomirus.pdf
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/28812069612.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_off0000537d.bin
a9189c42a55512691dd20eecb51d668d74c0f451c2e57758aa64228a9a46bfb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x537D 5168 bytes
font_01_sfnt_off000064f2.bin
5a0742f471cc58830481bd453f488fdd14dd77cee3bf76345fcfa1d8afbf2c5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F2 9788 bytes

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