Malicious PDF — malware analysis report

Static analysis result for SHA-256 e07b8eaa8a92db6d…

MALICIOUS

PDF

48.2 KB Created: 2020-10-01 00:36:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3260344a9b232bc4eaa04f83c001ca8 SHA-1: ef4cfbc4f2306e5c4cc837c1b2a85cee1b8c7169 SHA-256: e07b8eaa8a92db6df9803786bbed5940f460e5e108dccfc4ca15a7274979b19f
150 Risk Score

Malware Insights

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

The PDF contains embedded links that are flagged as malicious redirectors, specifically pointing to 'https://gettraff.ru/strik?keyword=routing+protocols+pdf+cisco'. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to trick the user into visiting this malicious site. The ML classifier strongly supports the malicious nature of this PDF.

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://gettraff.ru/strik?keyword=routing+protocols+pdf+cisco
    • http://files.3dmetaphysics.com/uploads/1/3/2/7/132740804/9472371.pdf
    • http://wagol.rosytoesdesigns.com/uploads/1/3/1/0/131070847/rerujadesozobodur.pdf
    • http://nomuripu.slworship.com/uploads/1/3/0/8/130814168/jifopo.pdf
    • http://files.drawingonmusic.com/uploads/1/3/1/0/131070044/mupesibudunug-womexezaluzo.pdf
    • http://files.hannahfenske.com/uploads/1/3/0/7/130776492/woziwusigututago.pdf
    • http://files.staffordcounty.org/uploads/1/3/2/8/132814086/3d591012fe08.pdf
    • http://vegasivi.waragainstsweat.com/uploads/1/3/0/7/130775321/3024668.pdf
    • https://uploads.strikinglycdn.com/files/ef31decb-efe4-498c-97d6-a88133091589/53851534657.pdf
    • https://uploads.strikinglycdn.com/files/2d636b8f-e6e8-4cae-9bc0-55c3207e4366/33519674638.pdf
    • https://uploads.strikinglycdn.com/files/fb3b5cd0-e209-42ef-b363-f954fe3d5e64/5340985701.pdf
    • https://uploads.strikinglycdn.com/files/3383943a-fcdf-4c22-8d4c-60720b567995/tebisafap.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/25632453428.pdf
    • https://cdn.shopify.com/s/files/1/0431/6086/2874/files/25190396698.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/vuwepapozusamofezufujid.pdf
    • https://cdn.shopify.com/s/files/1/0435/7334/6465/files/75885632985.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_off000070f7.bin
e80a6f222ee992ec4767bf001dcaf20a93c407d02ac7f746cdedcf1a1b09b715
pdf-font-stream PDF embedded font (sfnt) at offset 0x70F7 4884 bytes
font_01_sfnt_off000081a5.bin
885bab0aea0f607df0cedb92ac436289877948b05d33122b86b19d97a2063843
pdf-font-stream PDF embedded font (sfnt) at offset 0x81A5 10560 bytes
font_02_sfnt_off0000a5a7.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5A7 4324 bytes