Malicious PDF — malware analysis report

Static analysis result for SHA-256 27734487174e585f…

MALICIOUS

PDF

67.6 KB Created: 2020-06-05 22:09:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d5e0eeb5b9a0915618d3d76b5bf1799 SHA-1: afdc169fecd3e1fe2b2c1a4558215b7b83055050 SHA-256: 27734487174e585fe0190fa2b28266d17f55bc08f8d6088e8186cc8d35cc12ac
62 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_SEO_LINK_FARM, indicating a large number of external links. The document body, though heavily obfuscated, contains a URL that matches one of the extracted external links. This suggests the document's primary purpose is to redirect users to a network of linked PDF files, likely for SEO spam or to distribute further malicious content.

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://blaughs.com/uploads/1/3/0/6/130604449/130604449.html#engineering+drawing+symbols+list
    • http://hostmaster.veronicadance.co.uk/uploads/1/3/1/3/131380916/lujuzinoleriwid.pdf
    • http://jvsonscustombuilders.com/uploads/1/3/0/4/130490665/9557385.pdf
    • http://cpanel.commonstrength.org/uploads/1/3/1/3/131378943/ziriwisugefoxu-dewagovakuxade.pdf
    • http://columbiabasinexteriors.com/uploads/1/3/0/6/130620475/kesudizekisixe.pdf
    • http://ttownpomsky.com/uploads/1/3/0/7/130739275/1459979.pdf
    • http://doctorofpelvichealthandrehabilitationvero.com/uploads/1/3/1/4/131438187/dikokupatozujo.pdf
    • http://microray.us/uploads/1/3/1/4/131453134/toxokedoku.pdf
    • http://top5properties.com/uploads/1/3/0/5/130551418/786d50.pdf
    • http://angeloakinsurance.net/uploads/1/3/1/4/131406153/542439.pdf
    • http://kengoesclick.com/uploads/1/3/0/9/130969690/jevirores.pdf
    • http://blaughs.com/uploads/1/3/0/6/130604449/terms.html
    • http://blaughs.com/uploads/1/3/0/6/130604449/dmca.html
    • http://blaughs.com/uploads/1/3/0/6/130604449/policy.html
    • https://fawibulakav.files.wordpress.com/2020/06/wedojoduzojajavut.pdf
    • https://doluwamesiwe.files.wordpress.com/2020/06/51397323257.pdf
    • https://bujoguzone.files.wordpress.com/2020/06/wodunazuvikozam.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_off0000c707.bin
baa7523f6f9ff00d923940ac842fe925bc395e1b6d20b11c09c568be07d0c408		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC707 10908 bytes
font_01_sfnt_off0000ecb5.bin
1c1143839f05a5789524e75987812d4076a19e8c6e3280f717ab7b4921f49ba8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECB5 16172 bytes

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