Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b4a91fc965449d6…

MALICIOUS

PDF

40.3 KB Created: 2020-11-05 08:58:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8281871850f5b63792c7afd7dbe4a07e SHA-1: 3644c213b772a07056a475343259be6725e99c13 SHA-256: 0b4a91fc965449d60a725b507ffdb0ffdbcf68d76df1467dabf52d123c21bd9d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL related to 'instagram private viewer free no verification'. The heuristic firings indicate this PDF is a redirector and part of a link farm, suggesting a phishing or scam attempt. While no scripts were directly extracted, the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://ggtraff.ru/strik?keyword=instagram+private+viewer+free+no+verification
    • https://jajamavufivaz.weebly.com/uploads/1/3/4/2/134235884/sasajolesaku.pdf
    • https://cdn-cms.f-static.net/uploads/4372105/normal_5fa05ec683f34.pdf
    • https://cdn-cms.f-static.net/uploads/4369664/normal_5f887021f1636.pdf
    • https://cdn-cms.f-static.net/uploads/4446759/normal_5fa08a8fc82df.pdf
    • https://lujadogube.weebly.com/uploads/1/3/4/5/134522393/vosevodakikopaxot.pdf
    • https://cdn-cms.f-static.net/uploads/4448535/normal_5fa2b03728f89.pdf
    • https://tatazazotogowe.weebly.com/uploads/1/3/4/6/134618267/dizibotu_nawaluzukusixu_rudekeb_kodoja.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d1566156-1ef2-4445-bdbd-33950b3a1ee7/65139780262.pdf
    • https://cdn.shopify.com/s/files/1/0266/9382/8782/files/98108515089.pdf
    • https://uploads.strikinglycdn.com/files/51e4709d-77be-4a05-be34-63de3a530dd6/krazydad_inky_answers_3x3.pdf
    • https://uploads.strikinglycdn.com/files/f32a3e3d-1410-436b-a8db-cb3d1e4565c3/zujigamaxuw.pdf
    • https://uploads.strikinglycdn.com/files/c0f7167e-2772-4a33-a6f4-c23330fc270f/13183755221.pdf
    • https://cdn.shopify.com/s/files/1/0499/3522/0904/files/12121471037.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d3b.bin
2e42aaedd261af48c4fc208dd25bd87fa99f96b466c55a1b89b907bed7a34503		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3B 5392 bytes

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