Malicious PDF — malware analysis report

Static analysis result for SHA-256 f24e36e888ec033f…

MALICIOUS

PDF

59.6 KB Created: 2020-08-17 11:11:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56d6089556af095732fafbeec805ee3c SHA-1: 3c098b94a4cc2456f4e16b8e9197bbaeb6b7ad03 SHA-256: f24e36e888ec033fa31c91652271fa4b0a3113c657a14a46decd24b4f5420a0c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, `https://ttraff.cc/pify?keyword=inflammatory+bowel+disease+treatment+guidelines+ppt`, suggesting a malicious intent behind the link farm. The document body itself is heavily obfuscated and contains some of these URLs, indicating it's likely a lure to drive traffic to these linked resources. 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/pify?keyword=inflammatory+bowel+disease+treatment+guidelines+ppt
    • http://files.bosombuddiesbenefit.com/uploads/1/3/0/8/130814169/gasobojogupefebosut.pdf
    • http://files.amberleyseedlingtrees.co.nz/uploads/1/3/1/4/131454503/8efe72d011a32e.pdf
    • http://files.pacopioneervalley.org/uploads/1/3/2/6/132680994/3171837.pdf
    • http://suwitevid.vinoaquino.net/uploads/1/3/0/7/130775350/836065.pdf
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/jevewiwamu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/bubuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/mefavasiwazixigasele.pdf
    • https://cdn.shopify.com/s/files/1/0437/2316/1768/files/miramojokajumafizagowux.pdf
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/wemezotesimokigurisa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/53562783875.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/neriweno.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/list_of_cabinet_ministers_of_haryana_2020.pdf
    • https://cdn.shopify.com/s/files/1/0440/2174/3781/files/purozezabimimimupis.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/eddelu_manjunatha_songs_free.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_off0000aad0.bin
9eced540584bd9bbf8831d6431c1a72cc90301f6f58f61a9dbf1bd93ea46c0d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAD0 5632 bytes
font_01_sfnt_off0000bdeb.bin
09dba48ccd49c88c83d4dcf42055e58e579d88b4b334b3a30413df2697591258		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDEB 10436 bytes

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