Malicious PDF — malware analysis report

Static analysis result for SHA-256 91fb892f0ae2b368…

MALICIOUS

PDF

41.8 KB Authoring application: Adobe PDF Library 9.0
MD5: 5b39726403f8799648e2dfb2896f6be6 SHA-1: 3237b849355b94778aa40fdc4b7ec283d296ec5a SHA-256: 91fb892f0ae2b368007660056539c02711ddcb34645f34c4fba99f3d761cb37d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs, identified as a link farm. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' suggests a phishing or traffic redirection purpose. The primary IOC is the host 'xoma.goodbreak.ru' which hosts one of the linked PDFs.

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://xoma.goodbreak.ru/uploads/2020/01/27/jamalidoxoku_mugodizezutotaf.pdf
    • https://sosivirasoxaz.weebly.com/uploads/1/3/0/4/130493476/3473275.pdf
    • http://remodelkitchenbathroom.com/uploads/1/3/0/6/130639712/1689949.pdf
    • https://sazarigapejozu.weebly.com/uploads/1/3/0/6/130603783/c74ae981940c3d.pdf
    • http://rayceramics.com/uploads/1/3/0/5/130542972/bavibaxabifege_wefade_kipupevozijo_makibubi.pdf
    • http://ardsleylatin.org/uploads/1/3/0/3/130313111/ninulosutuk.pdf
    • http://mrallenscience.com/uploads/1/3/0/6/130621854/85ecfed729e6.pdf
    • http://ab4xy.com/uploads/1/3/0/3/130323754/tudararo-xalofewi-raxomuxo.pdf
    • https://doxinavom.weebly.com/uploads/1/3/0/2/130273803/zenovakofefali-gavugatupuzefow-wesil-zisalu.pdf
    • http://artspark.com/uploads/1/3/0/5/130589312/2135ca.pdf
    • http://pefura.cityglush12.icu/uploads/2020/01/27/sepisozobabu-nozujonoziverew-vewojavevelolo-batefadede.pdf
    • http://christchurchportland.org/uploads/1/3/0/6/130639895/rukegoregarozadolim.pdf
    • http://mydigibong.com/uploads/1/3/0/3/130323319/2135908.pdf
    • http://gupapife.itechieguru.com/uploads/2020/01/29/3574793.pdf
    • http://robinsnestfunraiser.org/uploads/1/3/0/5/130551266/xozidamowuxuzu_roxire.pdf
    • http://suwugajal.desarrollo365.com/uploads/2020/01/28/kivozujura.pdf
    • http://servibois.net/uploads/1/3/0/6/130621210/5819454.pdf
    • http://meme.motiveorkestrasi.com/uploads/2020/01/28/jejakiw.pdf
    • http://movertoolkit.com/uploads/1/3/0/3/130313728/donerimugimi.pdf
    • http://newstylemarket.com/uploads/1/3/0/5/130539990/130539990.html#bseb+matric+compartmental+result+2018

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001685.bin
c1f9e953e4acf3f093fedc0e30fe2f518391468dda169b5d12a6f39dff41a4df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1685 8696 bytes

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