Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ee4ffaa86c1305…

MALICIOUS

PDF

104.0 KB Created: 2020-08-08 15:03:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47ab8e9e4d255decac670b4626aa2d76 SHA-1: 8bfe4bfa9b35b7edd2e42da7b6224fd2cba94492 SHA-256: f6ee4ffaa86c130501e7d72c39c63dcdaebe1f0e74db3cb877b076672580961c
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to ttraff.ru which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or phishing.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=amino+acids+types+pdf
    • http://xusawid.dakotadrywallnw.com/uploads/1/3/2/3/132302780/e606d6bf3.pdf
    • http://files.mairibudreau.com/uploads/1/3/0/7/130776864/ziwawajobigogefivane.pdf
    • http://zawulew.emporiumofcanton.com/uploads/1/3/1/4/131483281/2243037.pdf
    • http://files.bishopfenwicklax.com/uploads/1/3/1/4/131453919/fijem.pdf
    • https://cdn.shopify.com/s/files/1/0434/0740/9319/files/ludeluv.pdf
    • https://cdn.shopify.com/s/files/1/0434/1396/2919/files/byrne_v_van_tienhoven.pdf
    • https://cdn.shopify.com/s/files/1/0430/3768/7962/files/dudazusimibat.pdf
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/fios_channel_lineup.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/61659789846.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/vuxusek.pdf
    • https://cdn.shopify.com/s/files/1/0439/0964/4456/files/how_to_calculate_ammeter_reading_in_a_circuit.pdf
    • https://cdn.shopify.com/s/files/1/0438/5269/3654/files/72998677006.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/hematology_carter_center.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/41487569585.pdf
    • https://cdn.shopify.com/s/files/1/0435/9690/6659/files/48585721363.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_off00014ee4.bin
d3c31244522f23cc3feed25829fb9df856a871c7e81b551a50d9eafe0162d2e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x14EE4 5264 bytes
font_01_sfnt_off000160c8.bin
28c43a946289fcfe08c6d56b2a8d418c75df6212a5981facf5a2d5bbaed34699
pdf-font-stream PDF embedded font (sfnt) at offset 0x160C8 16204 bytes