Malicious PDF — malware analysis report

Static analysis result for SHA-256 23cc58e0dec53a42…

MALICIOUS

PDF

47.3 KB Created: 2020-08-03 19:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9b2f89ac231b9309bc44b23bf27f304 SHA-1: 821082489e23f78b7ac130f9a4534756cd322f2a SHA-256: 23cc58e0dec53a42eff1c2972c338da318755a5d466b991e6844f18f79845d66
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, which is characteristic of a link farm. One of these links, 'https://ttraff.cc/pify?keyword=bringers+of+the+light+pdf', is identified as a known malicious redirector. This suggests the document's primary purpose is to redirect users to potentially harmful content or phishing 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=bringers+of+the+light+pdf
    • http://files.wrfw887.com/uploads/1/3/1/4/131452811/3d661283624.pdf
    • http://files.fairlie.info/uploads/1/3/0/7/130775014/7640513.pdf
    • http://files.patteecanyonoutdoorschool.com/uploads/1/3/1/1/131164350/1768387.pdf
    • http://files.clarkscienceolympiad.com/uploads/1/3/1/6/131606630/17051788.pdf
    • https://cdn.shopify.com/s/files/1/0437/2529/1674/files/bevapeka.pdf
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/zavebogufuxake.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/3508750778.pdf
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/shell_shock_hacks.pdf
    • https://cdn.shopify.com/s/files/1/0431/8992/8096/files/rome_total_war_wiki.pdf
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/33321610199.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/lemizeravudifap.pdf
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/96265497163.pdf
    • https://cdn.shopify.com/s/files/1/0439/4123/2795/files/97436314629.pdf
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/73560100897.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006306.bin
a7c70f299fefd65ddab38b084b93db4a002dc80bea30a5fe6cddbe87589cfb69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6306 7164 bytes
font_01_sfnt_off00007b6b.bin
9c7c2b9ec78a5a552f31ea6ba98f1082b504a933b2f3c32f51729c56cc220c23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6B 5144 bytes
font_02_sfnt_off00008ceb.bin
32babc6f83b1edcab841c2967f27385c3ec1f9e3c5da7873338e339d1eeef0f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEB 10524 bytes

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