Malicious PDF — malware analysis report

Static analysis result for SHA-256 3770226d0eda3576…

MALICIOUS

PDF

40.0 KB Created: 2020-08-12 18:17:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dd0c00772c573845165f34f59e7ad30 SHA-1: 4483649eff36bfdb6a6aa0c9d343cacf528162fd SHA-256: 3770226d0eda35763dc04e7b73f746959fbd53a296107fb7c17574c8c3fe512a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wb?keyword=elephas%20projector%20manual', is designed to lure users to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely for SEO manipulation or to host further malicious content. 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/wb?keyword=elephas%20projector%20manual
    • http://files.lbksupersr.com/uploads/1/3/2/6/132682233/6d919d86634183.pdf
    • http://files.lisayorkarts.com/uploads/1/3/1/6/131637352/01612d995bf80.pdf
    • http://files.retrorocketgaming.com/uploads/1/3/2/6/132683147/ragimelitedujafimu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5570/files/ronaxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/pdf_bearing_catalogue_skf.pdf
    • https://cdn.shopify.com/s/files/1/0437/0278/0072/files/magic_arena_mac.pdf
    • https://cdn.shopify.com/s/files/1/0450/6232/4376/files/ledebelonoloxif.pdf
    • https://cdn.shopify.com/s/files/1/0440/0765/3526/files/legonukurabikuzevamef.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/36546651777.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/pink_floyd_moonhead.pdf
    • https://cdn.shopify.com/s/files/1/0428/5526/8518/files/58625681400.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/aafco_2020_official_publication.pdf
    • https://cdn.shopify.com/s/files/1/0439/1239/6968/files/24838793796.pdf
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/24645186847.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_off00005eb3.bin
9c3587d6f1bbc3f7f901cb5a7dfd5733a846c54c329245ff10fde4178c2f89b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB3 5204 bytes
font_01_sfnt_off00007042.bin
1f33a2ecf14524c495a0c1bc71b23ea38f07d31148ab4c512a07b6ad3501c725		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7042 10296 bytes

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