Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bfa87401987116e…

MALICIOUS

PDF

36.1 KB Created: 2020-03-11 06:51:43 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 764c51e7445c3089ca98d77037092b67 SHA-1: cb1eeb7a94bfca5abb2e846e69e31d9846ab5f07 SHA-256: 8bfa87401987116ef4f2bb7152d0858b76db23532b12ddbf81f892b4132452c1
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO poisoning or to distribute malicious payloads. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this behavior, indicating a likely attempt to manipulate search engine results or lead users to harmful content. The document body itself contains text related to a 'skf thrust ball bearing 51104', which appears to be a lure to make the document seem legitimate.

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://74-123-76-141.mgwnet.com/uploads/1/3/0/6/130639386/130639386.html#skf+thrust+ball+bearing+51104
    • http://kathyfitzsimmonsart.com/uploads/1/3/0/6/130639275/fijiwali.pdf
    • http://anthroposwellness.com/uploads/1/3/0/7/130775361/4329647.pdf
    • http://makeyourowncake.com/uploads/1/3/0/8/130874511/nafurimok.pdf
    • http://www.freshproducedaily.com/uploads/1/3/0/4/130436137/ba56610b64b07.pdf
    • http://saltlakecitybarbershop.com/uploads/1/3/0/4/130483909/sunom.pdf
    • http://geographie-structurale.org/uploads/1/3/0/7/130776587/lanodukuvuzixil.pdf
    • http://christianawt.com/uploads/1/3/0/7/130740385/e17e4.pdf
    • http://safetgrip.net/uploads/1/3/0/7/130739519/kigabo_sepajufidopop.pdf
    • http://rem5nyc.com/uploads/1/3/0/2/130272080/dd9b25ed8.pdf
    • http://www.trogliomusic.com/uploads/1/3/0/5/130546415/63532a15a.pdf
    • http://yulecheng10yuan.br3h.com/uploads/1/3/0/3/130379718/raroziropilokuwarasa.pdf
    • http://magalieshines.com/uploads/1/3/0/7/130738956/947883.pdf
    • http://www.littlemoonyogaperth.com/uploads/1/3/0/7/130738751/nekerufebodapoz_ratadalizej_kibor_relutotopaf.pdf
    • http://www.silvermantaxconsulting.com/uploads/1/3/0/9/130969190/9d25b3d3658fcb.pdf
    • http://www.pittsfieldspicnic.com/uploads/1/3/0/5/130544318/5762748.pdf
    • http://mx.bagcharmboutique.com/uploads/1/3/0/9/130969065/7175222.pdf
    • http://kl8n.com/uploads/1/3/0/2/130288600/e8f584584a3.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_off00006507.bin
a47b9ab0614ca3bb911be7986d9ae1721ec39c07fa61b3d335b885a31eaceccb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6507 8292 bytes

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