Malicious PDF — malware analysis report

Static analysis result for SHA-256 e88217325bf5efa8…

MALICIOUS

PDF

36.7 KB Created: 2020-03-09 02:58:36 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7dd714113f66c0d28c5ebdb75203ebcc SHA-1: 95b59e6d913f960f776bed46e7d84602018bce02 SHA-256: e88217325bf5efa86d605a1e5e49660039c684fec26f0f7c7e4ce7b50cb6a69e
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body text, though partially corrupted, suggests a lure related to PDF merging tools. The presence of numerous links to various domains, all following a similar pattern of numeric slugs and PDF file extensions, indicates a coordinated effort to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via link farms.

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://wenji.bpmtc.com/uploads/1/3/0/5/130539756/130539756.html#offline+tool+to+merge+pdf+files
    • http://nanakexpeditors.com/uploads/1/3/0/7/130775742/dujejix.pdf
    • http://drlupita.com/uploads/1/3/0/2/130288710/jepeb_xiwatogokam_dejesiraku.pdf
    • http://utahprospects.com/uploads/1/3/0/6/130621455/2137617.pdf
    • http://dejongedenkers.nl/uploads/1/3/0/9/130969305/pogusutunalumovuraji.pdf
    • http://nfctigers.com/uploads/1/3/0/5/130551249/fipurewew.pdf
    • http://www.nashparkerlax.com/uploads/1/3/0/7/130740142/d9d52c4d74d7.pdf
    • http://www.jeyflores.com/uploads/1/3/0/2/130289205/5281205.pdf
    • http://picocita.com/uploads/1/3/0/6/130604081/6835503.pdf
    • http://cbcprojects.com.au/uploads/1/3/0/6/130621190/0184ec0d850f.pdf
    • http://ketoboxie.com/uploads/1/3/0/2/130289797/9852269.pdf
    • http://latriboo.com/uploads/1/3/0/2/130271043/widudomoxe-genitinuvudotin.pdf
    • http://thetaramantra.com/uploads/1/3/0/5/130590229/5220453.pdf
    • http://greatnortheasterndesigncompany.com/uploads/1/3/0/5/130542692/1937679.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_off00006a41.bin
b09a90c214f856c47cbaf3c0660e649d608c4288794bea64eb1e1cd2f84f2321		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A41 6988 bytes

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