Malicious PDF — malware analysis report

Static analysis result for SHA-256 309bcf4eb3cc245f…

MALICIOUS

PDF

41.1 KB Created: 2020-08-13 23:33:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d7bd416cb11a662a8ffb74bd228f093 SHA-1: fbdca750beb1dd8337e2e85939da3c0584c0836e SHA-256: 309bcf4eb3cc245f074958dde761c53efd34826d370634e4c7d94fad04cdaa2b
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, many of which point to a redirector service. The document body, though heavily obfuscated, contains the primary malicious URL. The heuristic firings indicate that this PDF is designed as a link farm, likely to distribute malware or conduct phishing attacks. The primary malicious URL is https://ttraff.com/pify?keyword=arcgis+diagrammer+schema+report.

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=arcgis+diagrammer+schema+report
    • http://nizex.unisonwestberks.com/uploads/1/3/1/8/131871674/rirogekiv.pdf
    • http://files.goldendaleobservatory.com/uploads/1/3/1/4/131406049/48622ac2797a78.pdf
    • http://files.ggcareerservices.com/uploads/1/3/2/6/132695492/kapopojekedaluso.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/6122116256.pdf
    • https://cdn.shopify.com/s/files/1/0429/3204/3943/files/29831221994.pdf
    • https://cdn.shopify.com/s/files/1/0438/9237/5704/files/preschool_activities.pdf
    • https://cdn.shopify.com/s/files/1/0436/7872/8345/files/pavufok.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/fadufasu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/99501720304.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6578/files/tv_guide_detroit.pdf
    • https://cdn.shopify.com/s/files/1/0433/5747/0870/files/xoxolotomilaramimixopigu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3212/files/46881899956.pdf
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/safezewuruwoduvuni.pdf
    • https://cdn.shopify.com/s/files/1/0432/8361/1801/files/zejumiwawilelejuva.pdf
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/75307756805.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/17998731410.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005595.bin
2272002060cfb8dfcd330afebcbc6aafc27230f6158a43341ffeec62f9a45534		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5595 5128 bytes
font_01_sfnt_off000066f9.bin
c792585431cc9063d137dcec3bbc4f7d6c29e5f1516b70ebf6ce577c4e7cf591		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F9 10052 bytes
font_02_sfnt_off00008966.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8966 4324 bytes

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