Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f25af23152174ba…

MALICIOUS

PDF

45.8 KB Created: 2020-08-09 10:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3af8b653610cbc77628742d8338c3c9d SHA-1: 3ed9c0e9ab8647557eb11f5be96f32ec335a74ee SHA-256: 3f25af23152174bad4a7d12e39c035b7085f4431d0342c196d6be84075e0136d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=basic+techniques+in+animal+cell+culture+pdf'. Additionally, it exhibits characteristics of a link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0431/7279/0427/files/dapobi.pdf' being a prominent example. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to trick users into clicking through to a potentially harmful 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=basic+techniques+in+animal+cell+culture+pdf
    • http://dofavatad.vanvolleyleague.ca/uploads/1/3/1/4/131438641/jinuwenotoxupo_tepapikux.pdf
    • http://files.schoolontherise.com/uploads/1/3/0/7/130775431/9840034.pdf
    • http://files.homegrownblooms.org/uploads/1/3/2/6/132695445/fitevi.pdf
    • http://files.melodicfusion.org/uploads/1/3/1/4/131452959/dalizonelomas.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0427/files/dapobi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/chrome_extensions_website_to.pdf
    • https://cdn.shopify.com/s/files/1/0435/2016/3999/files/deadlock_avoidance_in_os.pdf
    • https://cdn.shopify.com/s/files/1/0434/7287/9782/files/kivosodugi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/political_theology_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/rufonaku.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/80012037512.pdf
    • https://cdn.shopify.com/s/files/1/0428/4930/4742/files/12368659506.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/59265923311.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/47067639773.pdf
    • https://cdn.shopify.com/s/files/1/0429/6635/2025/files/6256697195.pdf
    • https://cdn.shopify.com/s/files/1/0429/8499/7025/files/97514064485.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_off00007626.bin
14c90d11b3a1eec126ce0847c2b7ecc5c37c285db193413eb5b0fc5024e4dbba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7626 5568 bytes
font_01_sfnt_off000088e8.bin
25d81e1e1fa9ab2bebab64385c5928cd29e4451429acc5248e2db41e76a2d904		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88E8 9616 bytes

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