Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e61a0257ce3e896…

MALICIOUS

PDF

47.4 KB Created: 2020-08-03 18:49:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93dd65214437e719b3f84728cf9312f2 SHA-1: df3c14a2eedf4cc29919d41c436f1a658505052e SHA-256: 8e61a0257ce3e896f57b3e5f633b863eabef18b6de2ea3ab7daf0dd2fd6129e4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of external links are embedded within the document. The primary malicious URL identified is https://ttraff.ru/pify?keyword=descargar+mapa+carreteras+asturias+pdf, which is likely used to lure users into clicking through to a compromised or malicious site. The document body contains garbled text but also includes the malicious URL and several other Shopify-hosted PDF links.

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=descargar+mapa+carreteras+asturias+pdf
    • http://files.mirandatinaphotography.com/uploads/1/3/0/7/130775520/tamisonanisagisu.pdf
    • http://files.cobilconnect.com/uploads/1/3/0/9/130969853/6ea8d66a.pdf
    • http://files.scottstchurch.ca/uploads/1/3/1/4/131407155/b763ff.pdf
    • https://cdn.shopify.com/s/files/1/0436/0588/5090/files/79528958258.pdf
    • https://cdn.shopify.com/s/files/1/0436/6853/7509/files/89828484485.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7318/files/rilixuwu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/72250345155.pdf
    • https://cdn.shopify.com/s/files/1/0429/7608/4117/files/numbers_every_programmer_should_know.pdf
    • https://cdn.shopify.com/s/files/1/0432/7931/9196/files/givasamotoketakorekilibin.pdf
    • https://cdn.shopify.com/s/files/1/0440/4543/5030/files/how_to_rip_cd_to_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/jamejujoxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/99371353032.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0081/files/62503561635.pdf
    • https://cdn.shopify.com/s/files/1/0437/1428/1625/files/gafix.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_off0000786e.bin
5006e234122ca5f960f7d8a4ff9753838f990daa428bcce63efbeb5761889ef3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x786E 5440 bytes
font_01_sfnt_off00008ae4.bin
730d6394f3317cab6fb619828a4b2dfecccab56c0956c02be98873e199ca25cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE4 11052 bytes

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