Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a80a6828f50b102…

MALICIOUS

PDF

45.1 KB Created: 2020-08-19 12:09:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9eb040d3650c93cc4724dbd400b9943 SHA-1: afc3f279e35eadc6b4312499649aa0dcf44f04af SHA-256: 8a80a6828f50b1024b36c59ff331d7c093f1c5cd27efebff83f1087c8b9611d2
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=vocal+synth+vst'. Additionally, it exhibits a PDF link farm, with many links pointing to benign Shopify URLs but also including several unknown URLs hosted on various domains. The presence of a 'download button' heuristic suggests a lure to entice users to click these links. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=vocal+synth+vst
    • http://nefewiwed.cottlewolly.com.au/uploads/1/3/1/3/131379636/fibodif-nufugekizubojig-zofegoniliru.pdf
    • http://files.anikasten.com/uploads/1/3/1/4/131453636/7488570.pdf
    • http://zunowuwos.elbowtreeflorida.com/uploads/1/3/0/8/130813979/9647527.pdf
    • http://files.steinbachcommunityoutreach.com/uploads/1/3/0/8/130874594/4549988.pdf
    • http://files.davisdentallab.com/uploads/1/3/0/9/130969659/b036c2a8e66eec.pdf
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/south_bend_lathe_parts.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2452/files/54811005232.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wefudebavisizaku.pdf
    • https://cdn.shopify.com/s/files/1/0445/6418/5247/files/airship_openstack.pdf
    • https://cdn.shopify.com/s/files/1/0430/1930/5113/files/dependent_clauses_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/illustrated_encyclopedia_of_world_history.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/sinixegiwipito.pdf
    • https://cdn.shopify.com/s/files/1/0430/9336/0791/files/tropico_android_cracked.pdf
    • https://cdn.shopify.com/s/files/1/0434/2969/1558/files/25537528079.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_off00006f26.bin
e3886aa6c796f77879b03e3a8bdb78c905611cc7cd733697634fb9012b2a5092
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F26 4916 bytes
font_01_sfnt_off00007fdb.bin
b119d627f1f60a688bf45650ad7474b8ebd349d3883ddf29c6e4a9138254e5f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FDB 12352 bytes