Malicious PDF — malware analysis report

Static analysis result for SHA-256 a85e562d3feac302…

MALICIOUS

PDF

37.2 KB Authoring application: Smallpdf Desktop
MD5: 8bfd667cf4fa35a5f31fc80d2479a4e7 SHA-1: 6a829ed9f54792a8c920f7fda38a16349d1e7628 SHA-256: a85e562d3feac302f812fc0c6c0ea11fce50e9ad543f2df9e8b94f0a446a9706
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, which is a common technique for distributing malware or leading users to phishing sites. The ClamAV detection further confirms its malicious nature as Pdf.Dropper.Agent. The embedded URLs are likely used to host and deliver secondary payloads or redirect users to malicious websites.

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.Dropper.Agent-7997035-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7997035-0
  • 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://monarteonline.com/uploads/1/3/0/4/130435555/zibavutosef.pdf
    • http://danscentrumnorr.com/uploads/1/3/0/6/130621180/reximul.pdf
    • http://cpanel.zeeshanbaig.com/uploads/1/3/0/6/130605472/9368374.pdf
    • http://goldenpoppybaby.com/uploads/1/3/0/5/130590717/bulozaritar-fotisufijo-rezodebovamad-xabebakijorejuz.pdf
    • http://nysmaplepartridge.com/uploads/1/3/0/7/130775722/dbb7d73b1.pdf
    • http://fleuriebaby.co.uk/uploads/1/3/0/4/130476976/zuwasigisopatil.pdf
    • http://acaringpregnancy.com/uploads/1/3/0/7/130738863/tetigokolidanulaz.pdf
    • http://cloakanddaggerdc.com/uploads/1/3/0/4/130488414/bulizida.pdf
    • http://legacyandalchemy.net/uploads/1/3/0/6/130639061/5825548.pdf
    • http://www.pauleysmalamutes.com/uploads/1/3/0/5/130551001/f7d3e.pdf
    • http://mothusi.com/uploads/1/3/0/5/130589276/zowim_minudozirotuxuw_motene_kofet.pdf
    • http://jamesmettler.com/uploads/1/3/0/4/130436006/pujusopapowakap-toxuli-pebuk.pdf
    • http://www.gigi-designs.co.uk/uploads/1/3/0/4/130478470/vinide.pdf
    • http://getsetcloud.com/uploads/1/3/0/8/130874039/bubabeku.pdf
    • http://anaconstruction.trustabiz.com/uploads/1/3/0/6/130604494/fugok.pdf
    • http://myeclecticyoga.com/uploads/1/3/0/5/130551935/dilalisomem.pdf
    • http://www.emerginghiphop.com/uploads/1/3/0/6/130604136/woduwon_dezazojuve.pdf
    • http://rachelmcoburn.net/uploads/1/3/0/2/130271076/fizukoderan.pdf
    • http://shannondriscol.com/uploads/1/3/0/2/130287413/1401660.pdf
    • http://professionalloss.com/uploads/1/3/0/5/130551386/3462929.pdf
    • http://drlupita.com/uploads/1/3/0/5/130545698/64100.pdf
    • http://etceterabypatricia.com/uploads/1/3/0/6/130621385/tanululusegawaj-xukuxaw-julusuvuvidatem.pdf
    • http://goodgoal.net/uploads/1/3/0/5/130588596/1945628.pdf
    • http://pmyui.bpmtc.com/uploads/1/3/0/6/130621354/130621354.html#printable+graph+paper+11x17

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fa1.bin
eb696849b04c9fcf381adaed8162d37a200f1f4068d44dfd09e31c395d5fccf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA1 7600 bytes

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