Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd46869c50bf285a…

MALICIOUS

PDF

69.8 KB Created: 2020-08-10 18:01:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae9e71084476ee210d4ce9e784d6f5f3 SHA-1: 89c51d3ca9627e5c306c164d0a1ceb61efb36944 SHA-256: cd46869c50bf285aea0239da07e158f9ccfb7ff76f1c35bb842dd2da1be71e09
128 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, as flagged by PDF_SEO_LINK_FARM. The presence of a visual download button lure further supports the malicious intent of redirecting users to harmful content.

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.cc/pify?keyword=primary+cell+culture+protocol+pdf
    • http://files.suffolkshelties.com/uploads/1/3/1/3/131383510/980433.pdf
    • http://files.ouramericanjourney.org/uploads/1/3/1/4/131409309/fuzoga-toniwixepejajid-nixuzigokus.pdf
    • http://files.jusiadventures.ca/uploads/1/3/0/8/130873872/1200260.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4260/files/77461076247.pdf
    • https://cdn.shopify.com/s/files/1/0431/5332/6241/files/accelerated_rehabilitation_after_anterior_cruciate_ligament_reconstruction.pdf
    • https://cdn.shopify.com/s/files/1/0437/5271/8494/files/carranza_periodontology_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/1628/9442/files/491792191.pdf
    • https://cdn.shopify.com/s/files/1/0436/7283/0105/files/90407027618.pdf
    • https://cdn.shopify.com/s/files/1/0434/7936/7845/files/tukogewawiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/3354/9205/files/building_construction_and_maintenance_engineering_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/5199/9637/files/nuziwepevupepiluwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0014/3770/files/80157757139.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/futewekevunobikesonojow.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_off0000d4e2.bin
cd0f476529c762348c9e7134d60f85b2385c1f9c11fcc29c19be39cefacc4865		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E2 5224 bytes
font_01_sfnt_off0000e694.bin
8a647f2ad6e87b3c22a821ca9b68aaa368b4ec869fd7b27b73278d03120687c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE694 10540 bytes

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