Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e0e48ed7eb8440…

MALICIOUS

PDF

48.3 KB Created: 2020-08-20 18:28:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40979028d6be915a2e1e25837691a0bb SHA-1: 4122b49e25f38c8575d865aa660b052ea2d553a4 SHA-256: 94e0e48ed7eb8440eec89436807587410f3a68aeb1501f15fcf04b0adfeca233
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=probability+sample+space+and+events+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking URL, suggesting a lure to external content. The primary intent appears to be redirecting users to malicious infrastructure.

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=probability+sample+space+and+events+pdf
    • http://files.rolmi4j.org/uploads/1/3/1/8/131871745/2357534.pdf
    • http://files.hersheyblazetc.org/uploads/1/3/0/7/130738641/dinewosorajo-dudoxetaba-gadadadob-dewopik.pdf
    • https://cdn.shopify.com/s/files/1/0449/3551/2232/files/bank_clerical_exam_books.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.pdf
    • https://cdn.shopify.com/s/files/1/0435/3366/4408/files/kufanuwosetalubak.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/toviluwonezi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2836/4968/files/pefog.pdf
    • https://cdn.shopify.com/s/files/1/0440/1748/3934/files/74233747660.pdf
    • https://cdn.shopify.com/s/files/1/0434/3624/5144/files/48632643657.pdf
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/facebook_ads_2020.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ea6.bin
7cc8368d4f1210b47e81560a8f79699122b449559fda1f12d7d3aa9e982661b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA6 5604 bytes
font_01_sfnt_off000071a1.bin
d55292d7179602c640618a20ba6d27ee799069a9b7d8d75f3b7371aaf4b05ecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A1 14404 bytes
font_02_sfnt_off00009f04.bin
ce82f410f69763b9254ae2e846fa1a6f8750a412c8c8dc0f300bd718e9d34bac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F04 16204 bytes

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