Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7cb8c4eb4ff31c9…

MALICIOUS

PDF

40.5 KB Created: 2020-08-31 03:41:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4440ac0d04975989963ddba387251a3a SHA-1: 35af990fa63e4f23cc0866257a6f559213896171 SHA-256: b7cb8c4eb4ff31c978c4706bba3600a81c12ebfca90da4998d3202fe976efdd4
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to appliance issues and the malicious URL, suggesting a lure to a scam or phishing page. The primary malicious URL is ttraff.cc, which redirects to a page related to the search query 'candy alise washer dryer not draining'. The file also contains numerous links to benign PDFs hosted on Shopify, likely part of a SEO link farm tactic to improve search engine ranking for malicious content.

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=candy+alise+washer+dryer+not+draining
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/rexroth_pneumatic_valves.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/clinical_chemistry_tests.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8893/files/dipakopexenikuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/ssc_gd._nic._in_answer_key_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8216/files/th6110d1021_manual.pdf
    • https://static.usrfiles.com/ugd/1f2646_daf59daeb7994367b85f6aaf9c2e1acd.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5da69e4631440b58f7fcf8c8e94b7ee.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e3b2b490fa644d5b36320bc24f030d3.pdf
    • https://cdn.shopify.com/s/files/1/0438/4142/1472/files/blogger_template_creator_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/5298/2684/files/78483836292.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_off000060ab.bin
05911cd0803c024e8226e29aa5bc4bf590be8d6bf7959d7966027c2999bb5941		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60AB 5188 bytes
font_01_sfnt_off0000725f.bin
8e50049dbd25c118594ba7aaf887910963b187cdd9b6afebebf17ea874b4f3c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x725F 10212 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.