Malicious PDF — malware analysis report

Static analysis result for SHA-256 57e4726116516e4e…

MALICIOUS

PDF

41.3 KB Created: 2020-08-20 20:10:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bee08a2f38d2c5e87028bd9e1307dfe SHA-1: 0d3bf8ae9b3693dca5eb01cc60b9394c35e5d31f SHA-256: 57e4726116516e4efb94f92bc55d4d9bc9680a57748c829c2fc2abb3379b0f23
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, a technique often used to create link farms for SEO manipulation or to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=agar.+io++apple'. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure. The presence of numerous other links, many pointing to Shopify domains, suggests a coordinated effort to distribute malicious content or phish for credentials.

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=agar.+io++apple
    • http://files.creled.com/uploads/1/3/0/7/130775471/330a2dd.pdf
    • https://cdn.shopify.com/s/files/1/0441/4432/8856/files/90294104369.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/lezukujoriv.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/38404041589.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/27_rules_of_subject_verb_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0437/9872/4769/files/tukap.pdf
    • https://cdn.shopify.com/s/files/1/0435/8920/6174/files/36330526728.pdf
    • https://cdn.shopify.com/s/files/1/0427/8448/9631/files/60951771157.pdf
    • https://cdn.shopify.com/s/files/1/0429/7578/9215/files/tajureno.pdf
    • https://cdn.shopify.com/s/files/1/0432/6424/5922/files/kerala_beef_recipes_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0432/7630/4544/files/67159911165.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/43264599671.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_off000059ee.bin
01266c086a6d386ed544f84d063982e948a03d29e9f8cf98c599e2f22670f92e
pdf-font-stream PDF embedded font (sfnt) at offset 0x59EE 4832 bytes
font_01_sfnt_off00006a6b.bin
27f3383aeddbffc25547ad2445f4486b0ba9d39f41d2e6ed3943c14dc0689cd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A6B 2792 bytes
font_02_sfnt_off00007619.bin
36e12074c9ca5d4de32be13bacd9d0c17ec2dd7e9cc846dc0b835b1280dd2364
pdf-font-stream PDF embedded font (sfnt) at offset 0x7619 10000 bytes