Malicious PDF — malware analysis report

Static analysis result for SHA-256 de1be5ead18ada08…

MALICIOUS

PDF

39.9 KB Created: 2020-08-09 18:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a455dcc345c6e99471fbf5788dc9b4cd SHA-1: c060dce33a8dbcf467b6c04beb5cdf5f1162e07e SHA-256: de1be5ead18ada0835bb7c1ab32cb07e651c41cef4ba05551ea8901782b316c0
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL, https://ttraff.cc/pify?keyword=gary+douglas+access+consciousness+pdf, is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links, suggesting a lure to a malicious site. The ML classifier strongly supports the malicious verdict.

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=gary+douglas+access+consciousness+pdf
    • http://nodeweg.srphotographymelbourne.com.au/uploads/1/3/2/7/132712207/sodefezokepugo_monid.pdf
    • http://vezekaker.salsa2013viiisesquiannualconference.com/uploads/1/3/0/8/130813612/sotanasa.pdf
    • http://dokureg.downsouthbait.com/uploads/1/3/0/8/130814575/4157376.pdf
    • https://cdn.shopify.com/s/files/1/0433/6769/4501/files/lasuzisonexixixovukapug.pdf
    • https://cdn.shopify.com/s/files/1/0430/2841/4618/files/lumuma.pdf
    • https://cdn.shopify.com/s/files/1/0437/1713/2456/files/bleep_test_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0435/6135/3371/files/11967480897.pdf
    • https://cdn.shopify.com/s/files/1/0433/8581/5205/files/4734954556.pdf
    • https://cdn.shopify.com/s/files/1/0435/8648/6440/files/54034820992.pdf
    • https://cdn.shopify.com/s/files/1/0432/4750/1474/files/vozuvepigikaxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/vamokemosamoside.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/zepad.pdf
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/bhu_bsc_physics_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/26876900325.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_off00005e16.bin
2a739e9261ca528dfa2ccf47d93d523f4f5e4dc00b0b41d2a5c0fd5b98c1efc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E16 5456 bytes
font_01_sfnt_off000070c7.bin
f11102989e2c92ab8f4aea6bda4550d0d48518d8791a3806c0150f15e672a0eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70C7 9984 bytes

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