Malicious PDF — malware analysis report

Static analysis result for SHA-256 256509e98edaaf91…

MALICIOUS

PDF

37.3 KB Created: 2020-08-14 21:54:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 984e492dd6ac0e15f5d28d57d02f2937 SHA-1: 3078d18ac7ab7359fbd3772d9e3bf824775b8949 SHA-256: 256509e98edaaf9155d83cea80ba37423553cfed45ca8963662ea01e70b2276d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL. The primary intent appears to be directing users to malicious infrastructure.

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=tabuh+bebarongan+dongkrak
    • http://files.albertaplaidgalloway.ca/uploads/1/3/0/7/130775429/05f7e8cb.pdf
    • http://files.leannejohnston.com/uploads/1/3/0/7/130738971/be70e888f8.pdf
    • http://files.creatingasharedcultureinschools.com/uploads/1/3/1/3/131380042/7ea4cf4df5847.pdf
    • http://files.marinegeosciences.com/uploads/1/3/1/3/131379174/purasoma_notivi.pdf
    • http://files.apeforge.com/uploads/1/3/1/6/131606502/8755054.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/xodudotewiwipiwokuja.pdf
    • https://cdn.shopify.com/s/files/1/0434/8523/3304/files/fomofure.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15843942414.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/minurodukoragavila.pdf
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/ruzosulozoxadi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4699/3063/files/95834713749.pdf
    • https://cdn.shopify.com/s/files/1/0440/5110/3894/files/fugegusimuzate.pdf
    • https://cdn.shopify.com/s/files/1/0449/3423/4280/files/executive_assistant_to_the_president_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/25945661039.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_off000055c9.bin
53172649dc9eafff53891d49e7f5fb290c0dc2a64bbb59a246b497f13213871b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55C9 5028 bytes
font_01_sfnt_off000066d9.bin
81e40922e780227c2ac16f59c8870ff8a30d51758e0571f4cbd5ccf02857cac9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66D9 9844 bytes

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