Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a4200146f064fa1…

MALICIOUS

PDF

39.5 KB Created: 2020-08-15 12:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54edda20195fefbc75c57d13ff06051c SHA-1: 6725d479f664500b900a0370e525884dce11522a SHA-256: 4a4200146f064fa1f5b477b45cb51101b29be77d426c81255bf5e6016422df7e
128 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, likely for SEO manipulation or to host further malicious 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.com/wb?keyword=top%20notch%202%20third%20edition%20pdf%20free%20download
    • http://files.nordoniadrama.com/uploads/1/3/1/4/131438541/gusowugaba.pdf
    • http://files.ipadbootcampforparents.com/uploads/1/3/2/8/132815787/pijejovuv_kuwegizube_nuxele_gozomuba.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1884/files/63895322175.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/jaloxidulikobad.pdf
    • https://cdn.shopify.com/s/files/1/0435/4798/4027/files/44084155193.pdf
    • https://cdn.shopify.com/s/files/1/0429/0969/6156/files/ripepewip.pdf
    • https://cdn.shopify.com/s/files/1/0438/3342/6082/files/worth_lyrics_by_anthony_brown.pdf
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/69691851519.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/watovunafasepen.pdf
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/gakinonemekifazafel.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/1415414921.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/zewosanurofakusozixet.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_off00005bec.bin
82e8f791be4dc450dbde223d6a4ca71c1b6faf34d490790c430475f63d1ac730		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BEC 5240 bytes
font_01_sfnt_off00006dc7.bin
964b14a357263adc3eed756d9e730b55ece10b9b8ce7eb48e75b98f96ad0870c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC7 10376 bytes

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