Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b8240e2cccbf862…

MALICIOUS

PDF

42.8 KB Created: 2020-03-10 07:42:00 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8273e569fdb888acd4fa681f47124b1f SHA-1: 27920afe8448939a11aad245398e85c20999478a SHA-256: 3b8240e2cccbf862be1189af23f1af83902fb01e6cdc417577e5690fc192dc92
62 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links pointing to other PDF files hosted on various domains. This technique is often used for SEO poisoning to drive traffic to malicious sites or to distribute further malware. The document body itself contains garbled text and a few URLs, reinforcing the link-distribution nature of the sample. No scripts were extracted, limiting the analysis of direct payload 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://a1209599xstreamtravel.xsideas.com/uploads/1/3/0/6/130605448/130605448.html#crise+algica+anemia+falciforme+cid
    • http://www.whensheruns5.com/uploads/1/3/0/2/130272282/nopovunosazokax_wojinedasedoso.pdf
    • http://caranelsondesign.com/uploads/1/3/0/5/130538839/7e31ee3b77f0.pdf
    • http://urboarquitetos.com.br/uploads/1/3/0/6/130621677/tukazis.pdf
    • http://church-home.org/uploads/1/3/0/6/130639486/buwatun-xitatabu-jemop.pdf
    • http://www.okanagansolarpower.com/uploads/1/3/0/6/130604497/7341192.pdf
    • http://audiorewind.com/uploads/1/3/0/7/130738741/wobesesitexinobutu.pdf
    • http://mail.www.openps.de/uploads/1/3/0/6/130621483/2974764.pdf
    • http://gracecarlisle.com/uploads/1/3/0/7/130775796/kogezenozajusiz.pdf
    • http://loftsuitesmonclova.com/uploads/1/3/0/7/130738896/14831.pdf
    • http://theladsonline.com/uploads/1/3/0/2/130287883/8791032.pdf
    • http://mobiletierphysiotherapie.com/uploads/1/3/0/3/130313049/4ee1dad9e.pdf
    • http://hostmaster.polmontgolfclub.co.uk/uploads/1/3/0/7/130775503/nisolifesuwot.pdf
    • http://www.ajtve.com/uploads/1/3/0/6/130621568/0703f618.pdf
    • http://felixvonreiswitz.com/uploads/1/3/0/7/130739363/560397.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_off000078bc.bin
8e442fe5f2880ad7aed327f929fa02dbb0185e96b95968e1a710446bff988de2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78BC 11248 bytes

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