Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c367691fffb905…

MALICIOUS

PDF

35.3 KB Created: 2020-08-15 12:23:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 825d5b87c84e203deb358e9647c48918 SHA-1: 256634403ae901ff4a134abd522c024345584869 SHA-256: 47c367691fffb905cf097082cf08c87ba2c4d11fe3a6119286ca30075e2516b8
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with the primary link pointing to a known malicious redirector. The heuristic firings indicate that this PDF is part of a link farm, likely for SEO manipulation or to distribute malicious content. The document body itself is largely obfuscated but contains the initial redirect URL. No scripts were extracted from this sample.

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/wb?keyword=small%20kitchen%20equipment%20and%20their%20uses%20pdf
    • http://kubifune.pathofselfdiscovery.com/uploads/1/3/1/0/131069839/71ebafa.pdf
    • http://files.boasc.co.uk/uploads/1/3/1/3/131378990/3413981.pdf
    • http://files.solvingminds.com/uploads/1/3/1/0/131070483/fc0318c07a25.pdf
    • http://ladumun.thedoorsandiego.com/uploads/1/3/2/6/132681245/5812095.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/gst_ki_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/35942730734.pdf
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/fe_other_disciplines_review_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/kuloguzu.pdf
    • https://cdn.shopify.com/s/files/1/0438/6711/1584/files/vufimu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/piroluzut.pdf
    • https://cdn.shopify.com/s/files/1/0435/7079/0558/files/fubigozajigadukik.pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3495/files/67125089594.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_off00004c59.bin
d59a470c9598ccbf3fdba264faa44ce443534d0ef05ecf40070c336d50fc4f98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C59 5688 bytes
font_01_sfnt_off00005f7e.bin
c211853aee540abd5ceb0d621e8ba014948df245b39422a2a4aa16a9461fd641		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7E 9776 bytes

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