Malicious PDF — malware analysis report

Static analysis result for SHA-256 b29e5f96437e196a…

MALICIOUS

PDF

56.4 KB Created: 2020-07-29 04:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41545df5a758b86239bfdff12de3bb68 SHA-1: c83fc0a6cd60bdeb56ef1b4b3b41153084d8d2a7 SHA-256: b29e5f96437e196af7e7bcf3b9ee210a4cd3cb00d27766a6f36486e5bf6003f2
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF SEO link farm. One critical heuristic firing indicates a malicious redirector link to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'early adulthood development pdf' and 'wkhtmltopdf', suggesting a lure to disguise the malicious intent. The primary goal appears to be redirecting users to potentially harmful websites.

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.ru/pify?keyword=early+adulthood+development+pdf
    • http://files.milamcountybiz.com/uploads/1/3/1/3/131379874/zemisap.pdf
    • http://files.gibraltarastronomy.co.uk/uploads/1/3/2/8/132814680/c441848af8051b1.pdf
    • http://files.brookekferguson.com/uploads/1/3/2/6/132695405/13b9e1de.pdf
    • http://files.agrseedandsupply.com/uploads/1/3/1/3/131383493/pogos_womapop.pdf
    • http://files.dehoniansocialjustice.org/uploads/1/3/1/4/131407274/nonawebir.pdf
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/81269505481.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/wumen.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/xojeg.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/236147369.pdf
    • https://cdn.shopify.com/s/files/1/0432/2243/3953/files/vobajokufuzekivimeso.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/moguroseguxaborewig.pdf
    • https://cdn.shopify.com/s/files/1/0428/8384/2215/files/xomelubefimoji.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/lamerubus.pdf
    • https://cdn.shopify.com/s/files/1/0434/5636/4711/files/jatirezexefasibakeledegil.pdf
    • https://cdn.shopify.com/s/files/1/0431/1764/1879/files/verevisowotarov.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/29911152724.pdf
    • https://cdn.shopify.com/s/files/1/0432/2656/2722/files/6215846264.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_off0000a029.bin
9249194a7c489bb5acc58f59bf67ee2165eff99e96a555f722e6a9235fd778d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA029 5056 bytes
font_01_sfnt_off0000b140.bin
7174bc19dbc445c36c25be514317ddfb490509079d8d0c139b63c537e2a19b92		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB140 10600 bytes

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