Malicious PDF — malware analysis report

Static analysis result for SHA-256 73519603f020a97d…

MALICIOUS

PDF

36.8 KB Created: 2020-08-20 22:11:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19607e17cbad76013df03b16e4711eac SHA-1: d3f16a737aed95b1b3944e7e4f27e5ae73eacd2d SHA-256: 73519603f020a97d7ff4460b90415821cc1d75b55ea0ad6ea4e8c44302d425ce
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a reference to the redirector URL and a seemingly unrelated movie title, suggesting a lure. The presence of a link farm indicates an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=index+of+endless+love+movie
    • http://sesipezi.smsdblueeagle.com/uploads/1/3/1/3/131383839/sirapepezagewojisela.pdf
    • http://vubegi.abbotttravelgroup.com/uploads/1/3/2/8/132814337/rajiraxusapoza-bovunotiriru.pdf
    • http://files.ojos-sb.com/uploads/1/3/0/7/130775498/rodoz-kasaraj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevimofurerofujasopam.pdf
    • https://cdn.shopify.com/s/files/1/0435/2871/6439/files/23096783091.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/south_bend_lathe_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8819/9328/files/graphing_absolute_value_inequalities_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/zaguworidobetel.pdf
    • https://cdn.shopify.com/s/files/1/0451/1324/5848/files/ranged_disadvantage_5e.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/xedagome.pdf
    • https://cdn.shopify.com/s/files/1/0431/8461/9681/files/73035613000.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/70850998448.pdf
    • https://cdn.shopify.com/s/files/1/0430/9359/0167/files/asset_management_process.pdf
    • https://cdn.shopify.com/s/files/1/0434/6871/8233/files/90212695482.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/52512652534.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3798/files/abzu_achievements_guide.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000519b.bin
8a365fe7a53c30894188cda1dd6bbfcdcfb4baec5d729765971f4488ac55e9b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x519B 4812 bytes
font_01_sfnt_off000061f5.bin
65266f874acc8f526a7035ee0fea2e6f4833839803d7313975ad5b9c4bf4bd24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F5 10632 bytes

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