Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c7c1652caa531f…

MALICIOUS

PDF

42.1 KB Created: 2020-08-06 09:06:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a3ac8a4794eb3b8831a4ca94e61618a SHA-1: 29a14f3b2f721f4b2f7336dd8769e749e7394981 SHA-256: 92c7c1652caa531ff7fa5c72b6d64482b73b7ce739f56ec685de727f7a1543df
120 Risk Score

Malware Insights

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

The PDF document contains a mass external link farm, with one prominent link leading to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'B. sc nursing syllabus' and includes the malicious URL, suggesting a lure to trick users into downloading further malicious content. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm designed for SEO poisoning or to obscure the final malicious destination.

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/pify?keyword=b.+sc+nursing+syllabus+pdf+mgr+university
    • http://files.sydneywaterpoloyouthfestival.com.au/uploads/1/3/1/8/131871433/januxig-sunoziri-lutala-dozanugemov.pdf
    • http://dufugu.holidayrentalsinsurance.com/uploads/1/3/2/6/132681670/c5405e7b5.pdf
    • http://files.180degreefinancialcoaching.com/uploads/1/3/0/9/130969744/d6ced7.pdf
    • http://files.jenbuffy.com/uploads/1/3/2/6/132682882/simipit.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8343/files/navovaxagit.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/18043465958.pdf
    • https://cdn.shopify.com/s/files/1/0434/7346/9597/files/matlab_nearest_neighbor.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/27450691807.pdf
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/kezakerobesat.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/45150113401.pdf
    • https://cdn.shopify.com/s/files/1/0432/3701/5719/files/2923505147.pdf
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/81044835311.pdf
    • https://cdn.shopify.com/s/files/1/0428/8921/6167/files/72514512551.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_off00005bc9.bin
61b28bd141f5329f49b6c3256e6826f053913c308569a18a545ae19cd2b52cd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC9 5860 bytes
font_01_sfnt_off00006fbb.bin
494101617e377aaecdf45f04affe89c7a3a7f7e3806e67f7b79c95e179a82c9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBB 14148 bytes

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