Malicious PDF — malware analysis report

Static analysis result for SHA-256 44432ad96d83afdf…

MALICIOUS

PDF

38.3 KB Created: 2020-04-22 03:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 618bdd154519b69b1d4d11d951a2a53e SHA-1: 72e72a347ae40deed5e1a324430ee66d352b1e4b SHA-256: 44432ad96d83afdffe93ffbe4327930846ca5fe7639f45339bdbd182c1406e86
62 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though partially corrupted, suggests a lure related to 'Disciplinary forms template'. The heuristic 'PDF_SEO_LINK_FARM' indicates a high volume of external links, pointing towards a malicious intent to drive traffic to potentially compromised or malicious domains.

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://mynumba.com/uploads/1/3/1/6/131606984/131606984.html#disciplinary+forms+template
    • http://betterthanbarebyhannah.com/uploads/1/3/0/7/130775986/verobolaluso.pdf
    • http://happybabyseattle.com/uploads/1/3/0/6/130604703/5587797.pdf
    • http://cansultgroup.com/uploads/1/3/0/5/130588596/783866.pdf
    • http://avedaluzern.com/uploads/1/3/0/2/130274345/1430279.pdf
    • http://vocalclone.io/uploads/1/3/0/5/130590297/81851f.pdf
    • http://jenroncorp.com/uploads/1/3/0/8/130814143/55924a3b98e2.pdf
    • http://compareenergyprice.net/uploads/1/3/1/4/131438567/xajefikevitizu-duvukexuzixufaf.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bfb.bin
d7eb5f93790db8ec362cfad8233526ccbd2b3319a96017ae3e656e2eb5cbc65e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFB 7256 bytes
font_01_sfnt_off00007889.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7889 16036 bytes

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