Malicious PDF — malware analysis report

Static analysis result for SHA-256 f94708b418a22500…

MALICIOUS

PDF

55.0 KB Created: 2020-08-25 10:09:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c5168b7b0f78656400e59a44f8caf94 SHA-1: 4653031e6f9810a174fa4016d78b92f0c8c858ae SHA-256: f94708b418a2250040a2bf74d23504f022677a487e0a557d8960fb295e9c469e
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent URL leading to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'sds sheets in spanish' and the malicious URL 'https://ttraff.cc/pify?keyword=sds+sheets+in+spanish'. This suggests the document is a lure to redirect users to malicious content.

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=sds+sheets+in+spanish
    • http://files.smokepitfairytales.com/uploads/1/3/2/6/132695397/bc7047cce9ec.pdf
    • http://files.mymeanderingmusings.com/uploads/1/3/2/6/132681062/2696347.pdf
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/nudewetujodonewuse.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/91481947767.pdf
    • https://cdn.shopify.com/s/files/1/0429/9964/4314/files/muwosexexeviribajasetit.pdf
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/vepudijiwafag.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/kuvije.pdf
    • https://cdn.shopify.com/s/files/1/0463/0550/9533/files/gifomejanu.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/calculus_concepts_and_contexts_james_stewart.pdf
    • https://cdn.shopify.com/s/files/1/0436/8410/2297/files/aspern_papers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/58055245251.pdf
    • https://cdn.shopify.com/s/files/1/0450/0927/2990/files/wepusidudepenuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/adobe_spark_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/30590214991.pdf
    • https://cdn.shopify.com/s/files/1/0438/9866/7163/files/cardiac_rehabilitation_phase_2.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_off00007f47.bin
740efa6ba5e23b269ffaebef97f912f47e8bc20458a4859ee9ad6216efad10ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F47 4700 bytes
font_01_sfnt_off00008f23.bin
061a5188f216be2307eb55936cc804fe8ba244290d8e5c0843bc85de3fd2f0bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F23 16036 bytes
font_02_sfnt_off0000c10a.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC10A 4324 bytes

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