Malicious PDF — malware analysis report

Static analysis result for SHA-256 adc19ac36d85fa4d…

MALICIOUS

PDF

41.8 KB Created: 2020-08-23 17:41:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67bf24fc8ab921f72f788e033dc5d5bf SHA-1: bcbaabe6153cc860965e05839edd227bf3552ba6 SHA-256: adc19ac36d85fa4d6ce43c39a536c9f57bca6371234ea56a7fa50bc7e0265939
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=accounting+equation+problems+and+solutions+pdf'. This URL is embedded within the document body, disguised as a link to accounting information. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains. The primary malicious IOC is the ttraff.cc redirector, which likely leads to a further malicious destination.

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=accounting+equation+problems+and+solutions+pdf
    • http://files.prepstep.biz/uploads/1/3/2/3/132302764/liwupadisojix.pdf
    • http://files.childrenfirstcurriculumusa.com/uploads/1/3/2/6/132681212/12b8bfe.pdf
    • http://files.bobgamblephotography.com/uploads/1/3/0/9/130969607/sawovipemu.pdf
    • https://cdn.shopify.com/s/files/1/0457/6722/9606/files/vitojegal.pdf
    • https://cdn.shopify.com/s/files/1/0431/6354/9847/files/40748570341.pdf
    • https://cdn.shopify.com/s/files/1/0431/2471/9773/files/rabakigepubajalubexog.pdf
    • https://cdn.shopify.com/s/files/1/0428/8941/2764/files/vilirujereratagiwukegax.pdf
    • https://cdn.shopify.com/s/files/1/0448/9995/8939/files/android_p_vs_ios_11.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/1097650250.pdf
    • https://cdn.shopify.com/s/files/1/0431/2711/1841/files/32801287804.pdf
    • https://cdn.shopify.com/s/files/1/0439/1819/6891/files/hematology_rodak_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/3903/9388/files/29313155218.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_off000063a8.bin
3a8a0706731f8946f29da8b075306f0a72eec3a154a76b6e0d4e63a31894c3ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63A8 5732 bytes
font_01_sfnt_off000076fc.bin
28e31cedef84dacdc420209a9233f60a1a9b4609765568aec436bdcecf8f9e10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76FC 10224 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.