Malicious PDF — malware analysis report

Static analysis result for SHA-256 c55bead40d60aed4…

MALICIOUS

PDF

43.6 KB Created: 2020-07-31 21:34:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c0de1f440e465b7907173309c84898f SHA-1: 16d3852fab62442ddd5a231eb87c02d9f39a91c4 SHA-256: c55bead40d60aed4671d0cd22e7b506cdfaefc7405ece4dd29ada7142119dd94
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 a critical heuristic firing indicating a link to a known malicious redirector. The document body text, though heavily obfuscated, contains the URL that leads to the redirector. This suggests the primary purpose is to lure the user to a malicious site through a chain of redirects.

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=playbook+barney+stinson+pdf
    • http://files.thomasfundraisingllc.com/uploads/1/3/1/4/131453065/3902226.pdf
    • http://files.jlsnaps.com/uploads/1/3/0/7/130776042/1ec588ba97.pdf
    • http://files.rhbconstructorainmobiliariasrl.com/uploads/1/3/1/8/131871729/mezuxilogavewem.pdf
    • http://files.tastefulgatherings.com/uploads/1/3/1/8/131856949/9847458.pdf
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/24825382788.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigemeziguvego.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/zuwixogomifiloduto.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/42152435777.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98048873934.pdf
    • https://cdn.shopify.com/s/files/1/0428/4222/6854/files/21265432713.pdf
    • https://cdn.shopify.com/s/files/1/0431/5552/1700/files/nopexiwetawatig.pdf
    • https://cdn.shopify.com/s/files/1/0432/1378/3203/files/manaluwadovaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3242/0250/files/42387680114.pdf
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/gezasapiralebesimegugujez.pdf
    • https://cdn.shopify.com/s/files/1/0435/6312/2843/files/28919682724.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_off00006c1e.bin
54945ae14212f17bf4ef2e818ea31bb650439c441919ce464815dead63d4cadc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1E 5344 bytes
font_01_sfnt_off00007e5b.bin
9198dd292869b0cb539dbf37d15d104d28a68b9b1858a7ba42a1aebefa5e0c38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5B 10488 bytes

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