Malicious PDF — malware analysis report

Static analysis result for SHA-256 21729512798a510b…

MALICIOUS

PDF

35.3 KB Authoring application: PDF Studio
MD5: 57809523e427df03044d5eefdce74a95 SHA-1: 8d08e186845164901c6b0c2dba4c0aa048565a83 SHA-256: 21729512798a510b4b79fade3316324470ce3d8c612724c0a73a91ab2507be9a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection also flags this as phishing-related. The embedded URLs are likely used to redirect users to malicious content or phishing pages.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://judgescottdonaldson.com/uploads/1/3/0/5/130590287/xejuxagekax-zukupasowe-tadororat.pdf
    • http://immediateinsight.net/uploads/1/3/0/2/130272295/fd0c23f.pdf
    • http://gixi.cityglush6.icu/uploads/2020/01/28/6888444.pdf
    • http://audio-start23.icu/uploads/2020/01/28/basena.pdf
    • http://tuz.irbispartner.ru/uploads/2020/01/28/maretonu.pdf
    • https://tariduzuduz.weebly.com/uploads/1/3/0/5/130544226/xasenakawotodo_solefiwijoxe.pdf
    • http://clubmegamixradio.net/uploads/1/3/0/5/130539450/wotesosogaziru.pdf
    • http://psychedaboutschool.com/uploads/1/3/0/6/130603917/rasiwonazemanote.pdf
    • http://rs-class.info/uploads/2020/01/29/e5fb1640b2dee00.pdf
    • http://northernrailleaders.com/uploads/1/3/0/6/130639922/130639922.html#fundamentals+of+corporate+finance+mc

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011c3.bin
9c5267aef38c369de61f1a1b156d446a00a5f692ff04d5c55769b5406078478b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C3 7168 bytes
font_01_sfnt_off00003c62.bin
4886052e6a0a8edc49772c59017284b05539a94604df457855bf4e7b201b890c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3C62 12396 bytes

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