Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4d68e6c07450144…

MALICIOUS

PDF

51.6 KB Created: 2020-08-03 13:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a69c5cf9b6a02bc19da6d4bfc0bcd093 SHA-1: 08e9b0ea111a024b223743a5344d4c9801b99f27 SHA-256: a4d68e6c07450144b6502289c9f77847bd9287310ae2663f7c0d638dcc8d4174
150 Risk Score

Malware Insights

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

This PDF document contains a mass of external links, many of which point to potentially malicious redirectors or content farms. The primary malicious link identified is https://ttraff.cc/pify?keyword=antony+and+cleopatra+pdf+modern+english, which is flagged as a known malicious redirector. The document's structure and the high number of embedded links suggest a tactic to distribute malicious content or phish for information through a link farm.

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://ttraff.cc/pify?keyword=antony+and+cleopatra+pdf+modern+english
    • http://files.tatianaklacsmann.com/uploads/1/3/1/3/131384573/fukelatofog.pdf
    • http://files.learningmn.org/uploads/1/3/0/7/130738875/milegubin_risuxadatope_dixutitu_mifezibetako.pdf
    • http://files.maddiehulsman.com/uploads/1/3/2/6/132681502/nituxefuku.pdf
    • https://cdn.shopify.com/s/files/1/0437/5468/4565/files/8515370842.pdf
    • https://cdn.shopify.com/s/files/1/0428/1889/6038/files/46065331844.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3031/files/mimibad.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/zopitenetam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdf
    • https://cdn.shopify.com/s/files/1/0431/0364/9953/files/white_mage_barding.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0099/files/lubigemajubab.pdf
    • https://cdn.shopify.com/s/files/1/0431/7442/8827/files/gojadanojomawokosupexip.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/tuluraviwisaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/jutuwamexutewamo.pdf
    • https://cdn.shopify.com/s/files/1/0436/3704/7449/files/boolean_search_strings.pdf
    • https://cdn.shopify.com/s/files/1/0431/2953/6676/files/piwovi.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_off0000892a.bin
d299b877c637b88eac5b23f645116bdaed6ae7c36f88b2141a39b39765f60ba9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x892A 5660 bytes
font_01_sfnt_off00009c52.bin
104690f832fd50ba5a4e06db02f7718b931d638f49d92a71ea4e61445a1064b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C52 11308 bytes

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