Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0c9b3de092147b…

MALICIOUS

PDF

43.7 KB Created: 2020-08-28 06:33:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0545d9327b3e2ddc9100dd1a88485e5c SHA-1: 185c90360e43f6e092d2ef5c9b2202b3612fb5c8 SHA-256: 3e0c9b3de092147b24860b10e207c6673e2e70b80490b89460558533cab11128
150 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=learning+from+las+vegas+summary'. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a potential SEO poisoning or phishing campaign aiming to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=learning+from+las+vegas+summary
    • http://vuxabi.reformedholytrinity.org/uploads/1/3/0/7/130776433/didibegifofavif.pdf
    • http://lezizo.maranathabiblens.com/uploads/1/3/0/7/130776132/4893919.pdf
    • http://files.singersandactorsworkshop.com/uploads/1/3/2/7/132740218/mubazaxumadajag.pdf
    • https://cdn.shopify.com/s/files/1/0434/2477/6354/files/68405842555.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovegutug.pdf
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/jesupovezazinopokuvab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34888362351.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9287/files/dixiko.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/web_design_proposal.pdf
    • https://cdn.shopify.com/s/files/1/0464/8678/2104/files/vovoji.pdf
    • https://cdn.shopify.com/s/files/1/0432/3750/7240/files/41572997872.pdf
    • https://cdn.shopify.com/s/files/1/0445/6303/8367/files/good_morning_photo_love_shayari.pdf
    • https://cdn.shopify.com/s/files/1/0428/6752/3743/files/regular_verbs_simple_present_exercises.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_off00006d53.bin
9b0ad9200ca995b32c4f8367411f9d6258d17023dcbdfcd0d4826cc95dc699c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D53 5188 bytes
font_01_sfnt_off00007efb.bin
ab5959958da038d28e4aa5b744bf1f6573f19bcada9f4d02bf0948ea70eb8d1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFB 10212 bytes

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