Malicious PDF — malware analysis report

Static analysis result for SHA-256 5068cfa721f8f6ca…

MALICIOUS

PDF

43.0 KB Created: 2020-08-25 13:30:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e8b67389d00b8a5d306a138fb8d3729 SHA-1: 9ff04a6268634aff019a76dfa7301d0cab0a7cbe SHA-256: 5068cfa721f8f6cabe52439f86d338824dcdda7cb007ee0b32f8af0392eee335
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=how+lazy+are+you+funny+answers, is likely used to funnel victims to a phishing or malware distribution site. The document also hosts a large number of other PDF links, suggesting a link farm or SEO poisoning attempt, with many pointing to benign Shopify URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=how+lazy+are+you+funny+answers
    • http://files.maltesemanor.com/uploads/1/3/1/4/131407227/8cac9ecebc.pdf
    • https://cdn.shopify.com/s/files/1/0441/2915/7272/files/brainstorming_tools.pdf
    • https://cdn.shopify.com/s/files/1/0435/2288/3735/files/wumomonifimij.pdf
    • https://cdn.shopify.com/s/files/1/0432/4396/2532/files/sinusitis_guidelines_european.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/gasazi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6775/8997/files/70138473381.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/top_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/49252229302.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/19102146386.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_off00006be2.bin
5a88b83e9eaed4873e2b3c000670fbada6b15b6b5b9617dfe30876b54022d0a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE2 4968 bytes
font_01_sfnt_off00007cf4.bin
7cd3785a4ace5e6d7763905d261192c3264b7ae86b1c5fe15fc296a5be903322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF4 10120 bytes

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