Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb62c16f902e3fb3…

MALICIOUS

PDF

37.2 KB Created: 2020-08-09 06:15:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 740d823035de89a8711029b4bcc8292f SHA-1: 4859c9098261d69f8dc44a208de36e8f8830d842 SHA-256: fb62c16f902e3fb34f44348111c5aef5aae4d910aed46c7d88562c36c4a8afb7
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, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting a tactic to artificially inflate search engine rankings or distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=all+about+me+in+spanish+pdf, which is likely used to redirect users to a malicious site.

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=all+about+me+in+spanish+pdf
    • http://files.threegracescoffee.com/uploads/1/3/1/8/131871980/7618838.pdf
    • http://dubijozus.willology.net/uploads/1/3/1/4/131453133/cf17ba.pdf
    • http://files.fridayflyfishing.com/uploads/1/3/1/4/131437402/guvis.pdf
    • http://files.motnik.net/uploads/1/3/0/8/130874046/sodetapugukivugoj.pdf
    • http://files.allvictoriavacuums.com/uploads/1/3/1/4/131437889/vozusezejelevu_lawidi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6413/8651/files/32352477773.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdf
    • https://cdn.shopify.com/s/files/1/0437/5294/7873/files/paweforakazefarefudeposo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/biloxuselokazego.pdf
    • https://cdn.shopify.com/s/files/1/0435/6128/7839/files/selena_gomez_zodiac.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99781003244.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/nrsv_apocrypha.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0583/files/nusonavabopewinipijivoken.pdf
    • https://cdn.shopify.com/s/files/1/0433/8860/0478/files/nexudipewoloteluj.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/lolizefoku.pdf
    • https://cdn.shopify.com/s/files/1/0437/4704/9621/files/git_log_graph.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/54361377126.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_off00004aab.bin
c333091010a0407bc1f15f30aa3d7c9bd53306fee580811b5454c3b68c588a5b
pdf-font-stream PDF embedded font (sfnt) at offset 0x4AAB 5312 bytes
font_01_sfnt_off00005c8b.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8B 1800 bytes
font_02_sfnt_off00006518.bin
2016b7e1d5f64bc1d1f7c81234b5adecb8f89686988a5a37e4f0949e39d09070
pdf-font-stream PDF embedded font (sfnt) at offset 0x6518 9604 bytes