Malicious PDF — malware analysis report

Static analysis result for SHA-256 e34900173cb4531f…

MALICIOUS

PDF

32.8 KB Created: 2020-04-19 14:12:05 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 85c718b037e30951f5512db3f396cf90 SHA-1: e8c1ba040a248e713ffefc12b7b004fd082efb08 SHA-256: e34900173cb4531ff80138c800f5c3af88a32c6ba30fb07b001617c2ef2666dc
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, disguised as a worksheet. The heuristic 'PDF_SEO_LINK_FARM' indicates that this is likely an attempt to generate traffic or distribute malicious content through a link farm. The document body, though partially corrupted, contains text related to a worksheet and also includes several of the external URLs, reinforcing the lure. No scripts were extracted, but the sheer volume of links suggests a malicious intent to redirect users to potentially harmful sites.

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://4angelstshirts.com/uploads/1/3/0/9/130969449/130969449.html#sum+of+interior+angles+of+triangles+worksheet
    • http://mywebpagemanager.com/uploads/1/3/1/4/131455680/rotadileginu_wevupej_lelilij.pdf
    • http://kendaltaylor.com/uploads/1/3/0/9/130969816/2449316.pdf
    • http://centrojazzalba.com/uploads/1/3/1/1/131164118/penenoxupipefag_mesibosi_famavosiseg.pdf
    • http://dimpledrops.com/uploads/1/3/0/3/130379463/1984101.pdf
    • http://specscoffee.com/uploads/1/3/0/7/130776787/30e31c1f1380c4f.pdf
    • http://goingbeyondreality.net/uploads/1/3/1/6/131607930/pubelip-xavele.pdf
    • http://jaxsonthegolden.com/uploads/1/3/0/6/130603764/9010880.pdf
    • http://unfiber.com/uploads/1/3/0/2/130289779/e10e6c.pdf
    • http://glowraleigh.com/uploads/1/3/0/5/130590368/bexutixuwokag_jepopaf_lafekisigij.pdf
    • http://annettemencke.com/uploads/1/3/0/4/130488243/5459663.pdf
    • http://arthritisgarden.com/uploads/1/3/1/6/131637136/b28ad4179.pdf
    • http://bobbinandweavingdesign.com/uploads/1/3/0/6/130621772/dd1bd996a.pdf
    • http://ghostyz.com/uploads/1/3/0/4/130475879/6344719.pdf
    • http://flukeexpeditions.com/uploads/1/3/1/4/131407299/f03e008e173d.pdf
    • http://feedomrings.com/uploads/1/3/0/7/130739631/3301783.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_off0000589b.bin
2d79a4596f19bcd991a220a639f706ccd284c139ec21df81d10e602eeab66636		 pdf-font-stream PDF embedded font (sfnt) at offset 0x589B 7564 bytes

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