Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1db4141432948bb…

MALICIOUS

PDF

38.1 KB Created: 2020-03-08 07:52:14 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: feb30da196440e1f38741840bf26c3bd SHA-1: aa206c66baed748e45def5f7bf803a0ba2c6d1e6 SHA-256: a1db4141432948bb3bbd4b77cf64b70094ee183d527daad8f9635765857248f1
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains text related to fractions and includes a URL that mirrors the structure of the other linked PDFs. This suggests a link farm or SEO manipulation tactic, potentially to distribute malicious content or improve search engine ranking for malicious sites.

Heuristics 3

  • 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.
  • 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://islandsplaya.com/uploads/1/3/0/2/130292110/130292110.html#adding+subtracting+multiplying+and+dividing+fractions+worksheet+with+answer+key
    • http://rubbish.clientdemo.co.nz/uploads/1/3/0/6/130621772/829427.pdf
    • http://bankheadboys.com/uploads/1/3/0/2/130289415/f707f.pdf
    • http://samuelsagan.net/uploads/1/3/0/4/130488446/pukabonawu_gilekerisuge_joxevedipiwe_nesebag.pdf
    • http://lgbaonline.org/uploads/1/3/0/6/130639528/ffa57d0617313ff.pdf
    • http://mail.bayviewpaintingllc.com/uploads/1/3/0/2/130272862/jiwebuw.pdf
    • http://www.burbankappliancerepair.org/uploads/1/3/0/7/130776502/3389023.pdf
    • http://cpanel.cuddlebuddy.ca/uploads/1/3/0/2/130288316/6f5e645.pdf
    • http://bigbangservices.com/uploads/1/3/0/2/130274279/4265305.pdf
    • http://pooleyslaw.co.uk/uploads/1/3/0/6/130604576/robusevoduk.pdf
    • http://petroyale.com/uploads/1/3/0/3/130379070/budixorime.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/8/130874066/wedow.pdf
    • http://afrocentricfilmscollaborative.com/uploads/1/3/0/7/130739190/ribovekil_dajivakow_panum_getogonu.pdf
    • http://coronadotools.com/uploads/1/3/0/7/130775259/9428884.pdf
    • http://longlifetherapy.com/uploads/1/3/0/7/130775378/jijuzovexumivixizi.pdf
    • http://brightpolicysolutions.com/uploads/1/3/0/6/130620515/a436898ab6.pdf
    • http://maryloulenhart.com/uploads/1/3/0/6/130620972/pulumis.pdf
    • http://montessoriinternationalchildrenshouse.org/uploads/1/3/0/7/130776133/c54185fc.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_off00006c21.bin
2a9b125eea2bc45308d9e2983d3ce2ffd8756c5f5784dcce0312b8b3736d523e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C21 7676 bytes

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