Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0e833d0a94c2abb…

MALICIOUS

PDF

55.6 KB Created: 2020-08-09 04:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94ec598cbdb60a1068db11585a681e1c SHA-1: 65113ab0ee7733b83295649e55a409b996a0e0ff SHA-256: c0e833d0a94c2abb0232f4f92432eee3cbf6167cdbe4fe4e062250764d41ee46
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains embedded JavaScript and a critical heuristic firing for a malicious redirector link. The primary link, https://ttraff.com/pify?keyword=concepto+de+certificacion+de+calidad+pdf, is designed to redirect users to potentially harmful content. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO manipulation or to obscure malicious destinations. The embedded JavaScript likely facilitates the redirection or exploits vulnerabilities.

Heuristics 4

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=concepto+de+certificacion+de+calidad+pdf
    • http://files.southshieldsmma.com/uploads/1/3/2/7/132740670/2094040.pdf
    • http://files.temploobaife.com/uploads/1/3/1/4/131438245/lelurebov-nonivopexaf.pdf
    • http://files.makeupthatreallyworks.com/uploads/1/3/0/7/130738814/1904556.pdf
    • http://files.rosemarysgardenhouston.com/uploads/1/3/1/1/131164386/3459725.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/letebavipeko.pdf
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/xipujusuza.pdf
    • https://cdn.shopify.com/s/files/1/0428/0025/1036/files/act_dps_meter.pdf
    • https://cdn.shopify.com/s/files/1/0435/8694/5187/files/calorie_counter_uk.pdf
    • https://cdn.shopify.com/s/files/1/0434/7589/4437/files/national_interest.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1651/files/punalirotavemidajelutarit.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7073/files/bokomuronagobipufupoxasek.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/27166727816.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/zakibenul.pdf
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/89551999146.pdf
    • https://cdn.shopify.com/s/files/1/0437/6929/9101/files/jekubijola.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b76.bin
11d63faa5ad42d6572aa8360dafbb1673267ad7201742b28ce513c7929cd263e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B76 4780 bytes
font_01_sfnt_off00009bbb.bin
ada4aa80238a8ead50429769e29244d6833357cf9842df9843a257516e0353cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BBB 11608 bytes
font_02_sfnt_off0000c165.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xC165 4324 bytes