Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4f21c918b489fcf…

MALICIOUS

PDF

42.9 KB Created: 2020-08-14 03:01:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8723baf4e6092ec0e30eafed86523f85 SHA-1: 91c850eb4ad97642d687cf2f372cdcf2dedd141f SHA-256: c4f21c918b489fcfbda1f0d3a9f66a9bb5f28716534568dc9d9f57c9ef8f8894
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and mentions a 'cake shop game for android', suggesting a lure. The PDF also contains a large number of external links, many hosted on Shopify, indicating a link farm for SEO manipulation or distribution. The primary malicious URL is https://ttraff.com/pify?keyword=cake+shop+game++for+android, which is likely used to redirect users to further malicious 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/pify?keyword=cake+shop+game++for+android
    • http://files.cedarkeyoutfitters.com/uploads/1/3/1/4/131452949/bujozabamulane.pdf
    • http://files.leescrossroadmbc.com/uploads/1/3/2/6/132682970/volagikulox.pdf
    • http://files.camerasforconservation.com/uploads/1/3/0/9/130969237/9661398.pdf
    • http://files.burmusik.com/uploads/1/3/0/7/130739309/fitexaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/9372/8158/files/pixadagesariba.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/vofelolojoxoj.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/40219325304.pdf
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/43712699224.pdf
    • https://cdn.shopify.com/s/files/1/0430/9093/5969/files/74366646805.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/wumevemixos.pdf
    • https://cdn.shopify.com/s/files/1/0432/3596/7143/files/72908500754.pdf
    • https://cdn.shopify.com/s/files/1/0437/8345/4872/files/gojevenulo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/lunilabuxekanujiwoletet.pdf
    • https://cdn.shopify.com/s/files/1/0434/4564/9574/files/91093231868.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/valivijozilafalidepona.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_off0000695a.bin
8861563c9ab7945e82586d6143c9c81512c7b0346e4a8932012b0e2999871f76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x695A 5392 bytes
font_01_sfnt_off00007b8c.bin
47cb8f854489ba5b5068aa4eddde9b73e9fc63c6c394cd6871c5917621147b21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8C 10180 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.