Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba993b2700733de…

MALICIOUS

PDF

51.2 KB Created: 2020-08-20 10:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54e0e150b9175c6f7b0eefae25ea11fe SHA-1: 6b1327495acb19847aed4dff89c6e8edf5eba886 SHA-256: fba993b2700733de0097a2d314d4027cef2e58a963f2522efbfd06baf18ff135
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=authorised+dealership+format'. This URL is presented within the document body, suggesting a social engineering lure. The file also contains a large number of external links, many hosted on Shopify, which is flagged as a PDF link farm. The document's content, though heavily obfuscated, includes the phrase 'Authorised dealership format' and the malicious URL, indicating an attempt to trick the user into clicking the 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.cc/pify?keyword=authorised+dealership+format
    • http://files.dianeaoki.com/uploads/1/3/2/3/132302978/693ac.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1315/files/xufoxazateka.pdf
    • https://cdn.shopify.com/s/files/1/0436/1987/7024/files/70252681502.pdf
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/download_converter_to_word_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/nilumopimamasupa.pdf
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/asp_net_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/gatovedafosuwifijozunuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/6555/7671/files/bumidote.pdf
    • https://cdn.shopify.com/s/files/1/0428/5536/6822/files/achilles_story.pdf
    • https://cdn.shopify.com/s/files/1/0431/0804/0853/files/78680492015.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/45539642960.pdf
    • https://cdn.shopify.com/s/files/1/0433/8165/3655/files/castrol_power_1_racing_4t_10w50.pdf
    • https://cdn.shopify.com/s/files/1/0429/7618/2426/files/95358287195.pdf
    • https://cdn.shopify.com/s/files/1/0447/7675/1261/files/lakshmi_narasimha_kavacham_in_telugu.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/
    • https://cdn.shopify.com/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b98.bin
3f0bb84778d2811cdb2fc2501396146428bb0979e461de2e4996e730581c6bb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B98 5268 bytes
font_01_sfnt_off00009d5d.bin
32528ffa9d1e56ec692657e4a57b91efa2044fb47f53113377a57e3c609c08c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D5D 10016 bytes

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