Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d265e18799f6861…

MALICIOUS

PDF

60.4 KB Created: 2020-08-11 04:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 724edc26ee90151e89b9e99f4a7dec13 SHA-1: 6e880d52f3f4529137f69d3b9200ace5779f0353 SHA-256: 9d265e18799f6861cff531df8de60f4f4efc17852311b87551725d3b8e718210
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=soal+tkb+pendidikan+agama+islam+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same suspicious URL. The primary intent appears to be luring users to a malicious site via a deceptive link.

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=soal+tkb+pendidikan+agama+islam+pdf
    • http://files.wombroommke.com/uploads/1/3/1/4/131409333/eba8e1.pdf
    • http://files.socialeject.com/uploads/1/3/1/6/131636914/4698451.pdf
    • http://files.topthispizzacrusts.com/uploads/1/3/0/8/130814466/xegisufi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9947/2551/files/8180849322.pdf
    • https://cdn.shopify.com/s/files/1/0433/4659/1903/files/action_research_in_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0434/3237/8517/files/vuvupuzupufedejuselu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1865/7697/files/41657860671.pdf
    • https://cdn.shopify.com/s/files/1/0429/4246/4163/files/8002338776.pdf
    • https://cdn.shopify.com/s/files/1/0444/3983/0695/files/clep_college_algebra_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/70416263234.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/sezetizutotikib.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/car_bill_of_sale_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0165/files/94023667155.pdf
    • https://cdn.shopify.com/s/files/1/0432/5559/5172/files/sasodumipunixudaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/tebiwagukomogulumesot.pdf
    • https://cdn.shopify.com/s/files/1/0436/3105/0915/files/trilogy_ventilator_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/4901/7756/files/33681742434.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_off0000ac59.bin
49643bd498e331dac38abc28062f1dae2a5993036ad9e17d412aa31152c70248		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC59 5572 bytes
font_01_sfnt_off0000bf37.bin
35c5581bcd3c7ff7b88b7ddf4f57163ddfd4c892a7d237dac362d2f108b6477b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF37 10864 bytes

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