Malicious PDF — malware analysis report

Static analysis result for SHA-256 582b384ec326b11a…

MALICIOUS

PDF

43.2 KB Authoring application: LibreOffice
MD5: 0a7aa77264c94ac1d0f3197cd372ede1 SHA-1: 014632716ebd8e81dd56b252c99b1450abb82a83 SHA-256: 582b384ec326b11a94b5d208e476a840c6b61ca56d1ab67a8587912112825c7f
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified as a link farm. This heuristic, combined with the ML classifier and ClamAV detection, strongly suggests a phishing or malware distribution campaign. The document body, though partially obfuscated, also contains several of these URLs, reinforcing the intent to direct users to external malicious content.

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://youngisraelnmb.org/uploads/1/3/0/2/130289233/fataguzoretab_xofaladamekijov_sidixebudaxuret_lugeb.pdf
    • http://m.torontoflowergallery.com/uploads/1/3/0/4/130491947/luregedosovepig-fexalogabumero-tebaboni-tapiruduvolazop.pdf
    • http://northparkvoicestudio.com/uploads/1/3/0/6/130639278/kamut_jivanolanitili_kavurazibenufal_keser.pdf
    • http://nelapidug.0706shpps05.fun/uploads/2020/01/27/sijoturamamavaku.pdf
    • http://districtvba.com/uploads/1/3/0/2/130289809/4287699.pdf
    • http://sos.tvmiyouka.com/uploads/2020/01/28/zimeja.pdf
    • http://dif.03shopppp.fun/uploads/2020/01/28/kejex.pdf
    • http://fobu.quizpoll.site/uploads/2020/01/29/zavipom.pdf
    • http://essteamlab.com/uploads/1/3/0/5/130539706/newifaraforezanuduj.pdf
    • http://riversidecountyhistory.org/uploads/1/3/0/7/130739087/130739087.html#present+perfect+present+perfect+continuous+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000129a.bin
dcf7b82eb6d0368ff4d746b22ddc8f73a26005f9900a9c64b1cab549b39bbca5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129A 8104 bytes
font_01_sfnt_off0000622e.bin
0f23141ba94d37b49c53016ac63a9b008a6ac8e4c4656a8d80e6725f77750189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622E 16140 bytes

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