Malicious PDF — malware analysis report

Static analysis result for SHA-256 b45f27e65d739352…

MALICIOUS

PDF

34.0 KB Authoring application: Inkscape
MD5: 10dd82885d15e7cd48767a59568046ac SHA-1: 1c7503a66cd60c6ef902299163ee295a9e284bc6 SHA-256: b45f27e65d73935278b10fd87b574a652779f1a71f35bb57e3a101c256d739f7
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule and ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0. The ML classifier also assigned a very high probability of maliciousness. The document body contains numerous embedded URLs, many of which are suspicious and likely lead to malicious content or phishing pages. The primary attack pattern appears to be a link farm designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://vubapowu.individuellepc.com/uploads/2020/01/29/55109.pdf
    • https://vajijinu.weebly.com/uploads/1/3/0/5/130552097/4842364.pdf
    • http://blak-out-squad.com/uploads/1/3/0/2/130271051/116344d343d.pdf
    • http://mycrossreference.net/uploads/1/3/0/6/130639911/8fb48f7e65.pdf
    • http://rentpellcitytalladega.com/uploads/1/3/0/5/130590296/c2718cf07bc4.pdf
    • https://guwojufobema.weebly.com/uploads/1/3/0/4/130436236/12e8f33577e.pdf
    • https://xetiratid.weebly.com/uploads/1/3/0/5/130550976/retof_jarukawi.pdf
    • http://nod.newtourist.ru/uploads/2020/01/29/volezogifasepi_wolikeve.pdf
    • http://braveangelyoga.com/uploads/1/3/0/2/130272880/difopek-folej-laxav-vulibekolu.pdf
    • https://manolujeweromam.weebly.com/uploads/1/3/0/4/130476743/680b60a0b608a.pdf
    • http://clickstore.xyz/uploads/2020/01/27/6919986.pdf
    • http://ancoraimparo.biz/uploads/1/3/0/5/130589423/8256672.pdf
    • http://ratuk.pay-pass.xyz/uploads/2020/01/27/daxevogub.pdf
    • http://acrpafrica.com/uploads/1/3/0/6/130639192/8091395.pdf
    • http://diabetest1ireland.com/uploads/1/3/0/6/130620863/tidaxab_gufifenamivuri_xawovigejuruzed.pdf
    • http://kebi.otzyvok.com/uploads/2020/01/27/firagowitepufoj-bupuz-fagutosuze-mubonupoxoro.pdf
    • http://colddiamnd.com/uploads/1/3/0/2/130288364/130288364.html#angular+5+reset+form+control

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000150b.bin
63a4472b78d1bae1f1d74c48dbf5a4544b7d667a5ba44920f8369b545eef3351		 pdf-font-stream PDF embedded font (sfnt) at offset 0x150B 8488 bytes

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