Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f54a158c92ccca5…

MALICIOUS

PDF

108.6 KB Created: 2020-07-14 10:16:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 423e41006b3833e2fd2ba3b723bde170 SHA-1: b3b36e82e613e5b96b88d58518b918efff9b2f74 SHA-256: 9f54a158c92ccca511783ef66b335e2d96b639c99cb73940a00993c2d477ce07
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious URL identified is 'https://ttraff.com/wb?keyword=propiedades%20fisicas%20de%20la%20leche%20de%20vaca%20pdf', which is flagged as a known malicious redirector. The document body is heavily corrupted, but the presence of numerous links suggests an attempt to manipulate search engine results or redirect users to potentially harmful 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.com/wb?keyword=propiedades%20fisicas%20de%20la%20leche%20de%20vaca%20pdf
    • http://files.adventurewithdiabetes.com/uploads/1/3/0/9/130969855/toxozovafadanirekope.pdf
    • http://files.allornothingnutrition.co.uk/uploads/1/3/1/4/131406600/xabamagativaz.pdf
    • http://files.pasadenamasoniclodge1155.org/uploads/1/3/1/4/131409794/5326969.pdf
    • https://danuduzag.files.wordpress.com/2020/07/sibabovimekobezurapuf.pdf
    • https://rabedebeg.files.wordpress.com/2020/06/lebiwoguvibazux.pdf
    • https://wivutotob.files.wordpress.com/2020/06/nawenuvolebivowelifexix.pdf
    • https://kijijoniwe413232708.files.wordpress.com/2020/06/55953972058.pdf
    • https://mebusevodon.files.wordpress.com/2020/07/kixara.pdf
    • https://wapuzebuto.files.wordpress.com/2020/06/wexakadodewaduwepeda.pdf
    • https://nedidama.files.wordpress.com/2020/06/xeruwinuriguwazosu.pdf
    • https://guzubuxokom.files.wordpress.com/2020/07/buxejolegijux.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/pabazimepivodopuna.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33540287451.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/xapexamipigimirakami.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/kutaluwegesizokuvowure.pdf
    • https://cdn.shopify.com/s/files/1/0431/5430/9284/files/taparugidobaxegajokijuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/1903199516.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_off00016e8b.bin
1725061e37ce3cffc72cfc3b5664027ae970bdcddb282cb0457293d883af6ced
pdf-font-stream PDF embedded font (sfnt) at offset 0x16E8B 4908 bytes
font_01_sfnt_off00017f48.bin
79a42e78a6e63e7a57248c55ecb3d0bb72d48f7a4552803dda695784881570e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x17F48 11360 bytes