Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddf159e5ccfffd44…

MALICIOUS

PDF

81.2 KB Created: 2020-09-12 06:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bd57922309e0316cf3f4da31797f219 SHA-1: ac78fd520acd4fefce8eca866eb9dfd6d061d04f SHA-256: ddf159e5ccfffd44ada55c18cb7863083689c8b7c89e1a5723327c8473cd98d4
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a calendar for the 2018 World Cup, likely as a lure. The primary malicious link, https://ttraff.cc/wix?keyword=mondiali+calcio+2018+calendario+pdf, is identified as a malicious redirector. The document itself contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a container for malicious 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.cc/wix?keyword=mondiali+calcio+2018+calendario+pdf
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/venolusalejuzaveret.pdf
    • https://cdn.shopify.com/s/files/1/0437/6068/1109/files/nazelamuwegedijifobe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6905/3854/files/whistle_sound_samsung.pdf
    • https://cdn.shopify.com/s/files/1/0433/6074/7688/files/mimovukuvusi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9371/1265/files/pezedeluwodiragugafon.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/96838179732.pdf
    • https://cdn.shopify.com/s/files/1/0429/4085/8527/files/66688904321.pdf
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/dekaxomijomiluvesap.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/68429699659.pdf
    • https://static.usrfiles.com/ugd/40336e_9f937fa3963b4b179bfe7f1d78829b20.pdf
    • https://static.usrfiles.com/ugd/451461_abf8a5e0d2fc44ff87f598c3da064b38.pdf
    • https://static.usrfiles.com/ugd/d55797_107c46fafe5a492994f9a09b01508be6.pdf
    • https://static.usrfiles.com/ugd/38955b_6694335b0fd14241829360d8eca86a8a.pdf
    • https://static.usrfiles.com/ugd/bbd3cf_a2f696ce8f7e4abf9bd24b1fdb5eaa45.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_off0000ff87.bin
f13b1497c589906651a20c09171f5f27780f18ee05e900aee6e5543ecdd7da69		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF87 5496 bytes
font_01_sfnt_off00011256.bin
64df92b415d9990769771ce9db45c9a9f6f55cb2afc2be8742e90f87583d2b9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11256 11476 bytes

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