Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda108531bf9d341…

MALICIOUS

PDF

49.7 KB Created: 2020-08-09 11:13:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ac25f7aeab41c51be25dfdb8b91ee79 SHA-1: 5e12dc8f81e0fde9a3e3c78df311892b34ec8385 SHA-256: bda108531bf9d3417daf8fd9991d5c78c3ad2c143ec055c836ac89980499eed8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=apprendre+le+russe+livre+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the malicious URL, suggesting the document's primary purpose is to redirect users to this malicious site.

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.com/pify?keyword=apprendre+le+russe+livre+pdf
    • http://files.arenewedhope.com/uploads/1/3/0/8/130814717/wadawuzirel_pamimukajuda_faluso.pdf
    • http://files.europeandeliriumassociation.com/uploads/1/3/0/7/130738969/zodotipukot.pdf
    • http://files.leahcarolinejones.com/uploads/1/3/1/3/131379343/1c5d2a5214b6fe.pdf
    • http://bemapawe.collegeofdentalsurgeonsbritishcolumbia.com/uploads/1/3/0/7/130739024/lezokupiwesopipuna.pdf
    • http://mowek.fieldsofbeing.com/uploads/1/3/1/3/131398140/merowevagibunubigup.pdf
    • http://files.arenewedhope.com/uploads/1/3/0/8/130814717/wad
    • https://cdn.shopify.com/s/files/1/0439/3651/4216/files/definition_of_policy_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/26329239039.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdf
    • https://cdn.shopify.com/s/files/1/0436/9973/2633/files/58685054109.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/mufemuju.pdf
    • https://cdn.shopify.com/s/files/1/0429/6350/1222/files/jabumatanaxona.pdf
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/xaxuda.pdf
    • https://cdn.shopify.com/s/files/1/0433/2273/6798/files/kawetakajegosos.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/check_plagiarism_online.pdf
    • https://cdn.shopify.com/s/files/1/0437/3531/8689/files/11939260129.pdf
    • https://cdn.shopify.com/s/files/1/0430/5187/6509/files/nuvizamiweburom.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/52599209631.pdf
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/57966110990.pdf
    • https://cdn.shopify.com/s/files/1/0447/8858/0512/files/define_bailment.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_off00008033.bin
b021d8d40f49e6bce1daa8f4cf2373eae9aa80d1b598b4b76058912e05b18180
pdf-font-stream PDF embedded font (sfnt) at offset 0x8033 4872 bytes
font_01_sfnt_off000090e0.bin
a42a3a9c98fb9f80aebf8be4599e2f1a032f5910fdca6bf2c70c3de802dedb93
pdf-font-stream PDF embedded font (sfnt) at offset 0x90E0 12696 bytes