Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad40404e2c2443d0…

MALICIOUS

PDF

41.3 KB Created: 2020-09-01 12:40:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4698da619c58ee29ce73b2787a8a75c6 SHA-1: 32886052c2ad5256a87fe7024252da716d57e4a9 SHA-256: ad40404e2c2443d03ed4075c0f4ff07e7eabb8957b78c379a7d5d1d012b7db3d
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that is also listed as a critical finding. This suggests the primary intent is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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/wix?keyword=peter+benchley%2527+s+creature+part+2
    • https://cdn.shopify.com/s/files/1/0438/4705/7568/files/basics_of_accounting_and_finance_for_interview.pdf
    • https://cdn.shopify.com/s/files/1/0430/6927/6313/files/65883994954.pdf
    • https://cdn.shopify.com/s/files/1/0433/7093/8533/files/old_lady_driver.pdf
    • https://static.usrfiles.com/ugd/dcfb95_908b90ab7cab41aaa6e183a97b03b1b5.pdf
    • https://cdn.shopify.com/s/files/1/0434/5774/0967/files/backup_whatsapp_iphone_android.pdf
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/4389078951.pdf
    • https://cdn.shopify.com/s/files/1/0434/4928/6813/files/sony_vegas_pro_13_crack_64_bit_serial_number.pdf
    • https://cdn.shopify.com/s/files/1/0438/1756/6368/files/cost_accounting_interview_questions_and_answers.pdf
    • https://static.usrfiles.com/ugd/a771bd_ee110b76f58a4f1aaa2e4b7e4a98b703.pdf
    • https://static.usrfiles.com/ugd/0c268c_ca8d8acd19014e19a7b154148e556772.pdf
    • https://static.usrfiles.com/ugd/aff7ca_cdcc87fef8e84410885c6f50923a204f.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_off000064f4.bin
099760ed962e129bbca91e5f56ba0af9e62366311b9797f3a5c0e70b3f611505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64F4 5428 bytes
font_01_sfnt_off00007772.bin
dc6c26ffabd5f9d365fe9bb8b63253ef5ddc6c954477e1ccad34564d16066614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7772 9820 bytes

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