Malicious PDF — malware analysis report

Static analysis result for SHA-256 b66abe3af94095c8…

MALICIOUS

PDF

41.1 KB Created: 2020-08-28 01:48:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f2685dfd66af3e3671f893b947a16f5 SHA-1: 6936be67e5085d6d2063948e1dee436d38360eca SHA-256: b66abe3af94095c8b53cf5f485251b7b3b85d8d32c0d004f0bf1bb52947f8262
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 for a 'PDF_SEO_LINK_FARM'. One of these links, 'https://ttraff.cc/pify?keyword=traditional+honduras+dress', is flagged as a malicious redirector. The document body is heavily obfuscated and contains remnants of this URL, suggesting the primary purpose is to redirect users to malicious content or for SEO manipulation. No scripts were extracted from this sample.

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.cc/pify?keyword=traditional+honduras+dress
    • http://vezesi.helpinghandsrescue.org/uploads/1/3/2/8/132815806/dizaku_webeto_dimokekipune_tones.pdf
    • https://cdn.shopify.com/s/files/1/0437/0939/9193/files/24053963155.pdf
    • https://cdn.shopify.com/s/files/1/0437/6064/8343/files/wedding_budget_checklist.pdf
    • https://cdn.shopify.com/s/files/1/0447/9470/8117/files/human_body_physiology_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0428/9150/9919/files/94317857223.pdf
    • https://cdn.shopify.com/s/files/1/0433/8656/8860/files/maths_quiz_with_answers_for_class_10.pdf
    • https://cdn.shopify.com/s/files/1/0450/1169/7814/files/yajur_veda_sanskrit.pdf
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/23132489048.pdf
    • https://cdn.shopify.com/s/files/1/0433/7310/1214/files/although_despite_in_spite_of.pdf
    • https://cdn.shopify.com/s/files/1/0437/9069/6597/files/twilight_by_stephenie_meyer_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/3075/4966/files/sigekoxakanimen.pdf
    • https://cdn.shopify.com/s/files/1/0440/7230/4790/files/romibojumorajexikosi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/vsdc_video_editor_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/5526/8518/files/waxanilorazolan.pdf
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/91295776595.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/birizakidunupujudexi.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_off000065e4.bin
a734b4563298233e77ce083e4dd40003e5ae9600e7cec80d67ea18f6968eab6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E4 4864 bytes
font_01_sfnt_off00007658.bin
9a8a07b4bf67e1002580e33827386c01a857025ef3340ed14a40294ddac7118a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7658 9788 bytes

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