Malicious PDF — malware analysis report

Static analysis result for SHA-256 405314d50826d08e…

MALICIOUS

PDF

59.7 KB Created: 2020-08-22 19:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cddb3d07c89ed9049add746f97cc2e03 SHA-1: cfa10914e2b4d7a269e4a3f45dcccf156db5d340 SHA-256: 405314d50826d08e862bb350bc895fea13b7e37ebcb7f81b39c369ecf4bcb7c8
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF filename, suggesting a lure. The presence of a 'download button' heuristic further supports the social engineering aspect of this attack. The primary malicious URL is https://ttraff.cc/pify?keyword=amharic+typing+keyboard.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=amharic+typing+keyboard
    • http://jijamujil.crawfordcountysolidwaste.org/uploads/1/3/1/3/131383721/tokakugib.pdf
    • https://cdn.shopify.com/s/files/1/0439/2402/9608/files/47161650959.pdf
    • https://cdn.shopify.com/s/files/1/0435/5771/6127/files/balance_sheet_accounts_order.pdf
    • https://cdn.shopify.com/s/files/1/0435/9284/3432/files/catching_fire_movie_script.pdf
    • https://cdn.shopify.com/s/files/1/0434/0809/7436/files/aptis_practise_test.pdf
    • https://cdn.shopify.com/s/files/1/0429/1955/9335/files/beowulf_poem_seamus_heaney.pdf
    • https://cdn.shopify.com/s/files/1/0428/6224/8095/files/eye_divine_cybermancy_research_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/brahmaputra_river_system.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/wosexuze.pdf
    • https://cdn.shopify.com/s/files/1/0437/6448/2202/files/engineering_company_profile_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/5714/3199/files/nivexetakodok.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9136/files/dukanugu.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_off000064b1.bin
1ebc6c982275868c46d6603ebd3b9d0095eae8fbbfaba79dbe86763ca6e9d16f
pdf-font-stream PDF embedded font (sfnt) at offset 0x64B1 27828 bytes
font_01_sfnt_off0000abe8.bin
38ec9d3a2e691ae00682a68833c61c5e5dc5bd5cf70806d379dff0b51ebe2ff7
pdf-font-stream PDF embedded font (sfnt) at offset 0xABE8 5572 bytes
font_02_sfnt_off0000bea3.bin
65e36315f119bfe0a99515b8afc771fa8dc35e576c9eb2d4c56c4fdb7b5e7028
pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA3 10324 bytes