Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a56453ba1dcded…

MALICIOUS

PDF

53.6 KB Created: 2020-03-30 04:59:45 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b63b4aec0b0c28e1977577997c9c286d SHA-1: 46dd4709da3e2625295385a18af19b49018bb3ac SHA-256: 80a56453ba1dcdedd562646bd0712747672eb397356553178ffded4e7eb3447d
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which are numerically or generically named, suggesting a link farm designed to distribute malicious content. The document body, though heavily obfuscated, contains references to 'mcsa study guide pdf' and numerous URLs, reinforcing the lure. No scripts were extracted, but the heuristic 'PDF_SEO_LINK_FARM' strongly indicates a malicious intent to redirect users to potentially harmful sites.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://allergy.mediutopia.com/uploads/1/3/0/5/130551033/130551033.html#mcsa+study+guide+pdf
    • http://tmpropertysolutions.com/uploads/1/3/0/9/130969950/jafeseju_zowoji_lababuzemawe_ririvikibuken.pdf
    • http://portraitprecision.com/uploads/1/3/0/6/130604408/zajazepexive.pdf
    • http://swendly.com/uploads/1/3/0/5/130542866/fomedunufe.pdf
    • http://mynastybath.com/uploads/1/3/1/4/131438171/61010b.pdf
    • http://thewefit.com/uploads/1/3/0/2/130273978/zixore_tiwiman_lurumijixekifi_zowilojawazox.pdf
    • http://angelsplacecafe.com/uploads/1/3/0/5/130589346/tomeziwevimiw.pdf
    • http://arianamcbride.com/uploads/1/3/1/0/131070722/c273b4c8a67.pdf
    • http://bellcreekagility.com/uploads/1/3/0/6/130621521/8224883.pdf
    • http://speakeasyliverpool.co.uk/uploads/1/3/1/4/131407395/badebibatakijafutozu.pdf
    • http://opportunityrecords.net/uploads/1/3/0/8/130814290/tisemi_dikenoful_kemotidatapag.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a89f.bin
c4cc1bf14e5ad2a1f6de10132914915628db3276f0e4a24262c1d93dbc6afea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA89F 8600 bytes

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