Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda37befac4d5f87…

MALICIOUS

PDF

54.0 KB Created: 2020-09-08 07:12:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79169f553b37f00231228d2a8b7276c4 SHA-1: 61e4b172a370853c2234aa73852a10f2bd224609 SHA-256: eda37befac4d5f8754691cd838442e0e6de67d73dae4a837056a061739fe9768
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to a suspicious URL. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links to external PDFs, with the primary suspicious URL being a redirector. The document body contains garbled text but also includes the suspicious URL, suggesting an attempt to disguise or embed malicious links within the document content.

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.link/wix?keyword=badmashiyaan+song++pagalworld
    • https://cdn.shopify.com/s/files/1/0437/3423/7333/files/faxibederiwadapopajudevol.pdf
    • https://cdn.shopify.com/s/files/1/0435/5244/0479/files/tenta_browser_pro_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5125/files/52780939490.pdf
    • https://cdn.shopify.com/s/files/1/0436/3865/3086/files/sine_cosine_and_tangent_practice_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/8515/1897/files/embodied_cognition.pdf
    • https://cdn.shopify.com/s/files/1/0437/7424/7069/files/13000504809.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/wozopopifosowesosotoj.pdf
    • https://cdn.shopify.com/s/files/1/0467/9876/6229/files/sign_guidelines_heart_failure.pdf
    • https://cdn.shopify.com/s/files/1/0429/5612/8412/files/45891898020.pdf
    • https://cdn.shopify.com/s/files/1/0431/4333/2000/files/24292247094.pdf
    • https://static.usrfiles.com/ugd/7dd30d_6894ff28be6d4b5481dc5c8a41dee5de.pdf
    • https://static.usrfiles.com/ugd/3ab5ed_3bffc1beb7f64a9b9f2a74ee52aa45bb.pdf
    • https://static.usrfiles.com/ugd/d17951_e6ca25153be24a94b90bbfb7d708eb1b.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/
    • https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b08.bin
ab9bc476dbe1cba6fde945f99a4116eb76b857f4fe80f356ce812d4d7446411b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B08 5616 bytes
font_01_sfnt_off00009e0b.bin
0e9a698297ce2be37047de240f015b8b78ac18fa529347132858d3eb6ccafc80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E0B 14680 bytes

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