Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d7ea06c4153e8a…

MALICIOUS

PDF

32.9 KB Created: 2020-08-12 08:54:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 922650f34050658da8c9a8b8c595bf55 SHA-1: 110326dff4b94295a63a5aa200e4dc69b6ce526c SHA-256: d9d7ea06c4153e8a07811bda3b2eb5eeceb61174af1496d3f2d1b3967eb64f21
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and a keyword suggesting a lure. This indicates a phishing attempt designed to redirect users to malicious infrastructure.

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.ru/wb?keyword=uwatec%20aladin%20tec%202g%20manual
    • http://files.neeniemakes.com/uploads/1/3/1/4/131483148/nupiral.pdf
    • http://files.cyberlaw.io/uploads/1/3/1/6/131637224/4163616.pdf
    • http://files.apharwat.net/uploads/1/3/1/6/131606268/nosokuwus-newamovebonu-ruzafoke.pdf
    • http://rasene.cancersurvivalwhatsnext.com/uploads/1/3/0/7/130740025/219d6e4877.pdf
    • https://cdn.shopify.com/s/files/1/0444/1748/2919/files/nsw_school_calendar_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/14116434980.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9277/files/83993553503.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/calculation_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/mesutafiges.pdf
    • https://cdn.shopify.com/s/files/1/0434/5357/9430/files/51875744524.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/fugijinin.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/rodezoduwowoliwibetoxufij.pdf
    • https://cdn.shopify.com/s/files/1/0432/6945/6028/files/15143066157.pdf
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/biology_class_11_practical.pdf
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/81268585196.pdf
    • https://cdn.shopify.com/s/files/1/0433/5478/3893/files/18513639640.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_off00004604.bin
f27950396a5add45709c07b7f1ad4a99c2338878cd385270f0bc3bceba69646b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4604 5200 bytes
font_01_sfnt_off000057b5.bin
57c3303e3b14fa4aa3aa4cc8fdb4008e094ef72d19b8199983841f6e564439ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B5 9092 bytes

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