Malicious PDF — malware analysis report

Static analysis result for SHA-256 50efafa2921905eb…

MALICIOUS

PDF

40.9 KB Created: 2020-03-18 13:07:56 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5bb8649376a78849debb9ab6c481eb2e SHA-1: f9c206e41c172dd8d905d8915c0eadf6fd7d64c2 SHA-256: 50efafa2921905ebb25f24ae62c36c847755763e904f79d1f545f51755c618ba
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially corrupted, contains a URL that matches one of the extracted links. This suggests the document is part of a link farm or SEO poisoning campaign, aiming to drive traffic to numerous external PDF files hosted on various domains. No scripts were extracted, limiting the ability to determine further payload delivery or execution.

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://dylanwyke.com/uploads/1/3/0/8/130814083/130814083.html#como+hacer+un+anteproyecto+de+tesis+ejemplo
    • http://sdaerospace.com/uploads/1/3/0/4/130488401/a90487b18.pdf
    • http://admin.domtel.com/uploads/1/3/0/5/130539370/6a97ab.pdf
    • http://freetelwireless.com/uploads/1/3/0/5/130546574/bbf814dd6f666.pdf
    • http://mikhaelbassilli.com/uploads/1/3/0/5/130590177/746d775.pdf
    • http://www.georgescafebrockton.com/uploads/1/3/0/7/130776241/fixamefuxatat.pdf
    • http://stfrancislawcenter.com/uploads/1/3/0/5/130543276/zixumap.pdf
    • http://cocacolaawards.com/uploads/1/3/0/6/130621216/d2b69dbb.pdf
    • http://gentlemandoors.com/uploads/1/3/0/6/130604541/3ee510b.pdf
    • http://www.megroa.com/uploads/1/3/0/5/130588518/wagabukijoride-buvewetidis-dagopejepiz-vidibam.pdf
    • http://nwlaautomationgroup.com/uploads/1/3/0/6/130604421/2089950.pdf
    • http://urhiscompany.com/uploads/1/3/0/4/130489247/7294884.pdf
    • http://houseboat.site/uploads/1/3/0/5/130550783/nipidij.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_off000075bb.bin
88417c44fae386466205905e378940e6356e253612eb780d73bd86dbfda45a3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75BB 9156 bytes

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