Malicious PDF — malware analysis report

Static analysis result for SHA-256 a97a4b9281c0f035…

MALICIOUS

PDF

33.6 KB Authoring application: OpenOffice.org
MD5: 838eca40565be8d613594e695d0c080e SHA-1: 0c36f86f2b2ea0e7043362559f372e3efb0dad2c SHA-256: a97a4b9281c0f035c5ce86c5b354ecbff7c714602aabbfc716561bce7eddc6cc
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body itself is heavily obfuscated and contains fragments of text related to editing PDFs, which may serve as a lure.

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://malcolmfitz-earle.com/uploads/1/3/0/3/130323235/1db426548ddf1c.pdf
    • http://joelwolfgang.com/uploads/1/3/0/5/130588151/991fd4b5cf.pdf
    • http://attractivecutsstudio.com/uploads/1/3/0/9/130969103/9736795.pdf
    • http://purebarretexasstrong.com/uploads/1/3/0/7/130738994/vumufogunaxi.pdf
    • http://cloudable.club/uploads/1/3/0/6/130621473/38e5330c4bff.pdf
    • http://howtobuyorsellyourhome.com/uploads/1/3/0/4/130435716/503176.pdf
    • http://12utct.com/uploads/1/3/0/4/130488092/5909596.pdf
    • http://princesssolomon.mobi/uploads/1/3/0/6/130605448/wumawaxesozidawone.pdf
    • http://foodsempire.com/uploads/1/3/0/5/130589415/nigajop.pdf
    • http://chickenindex.com/uploads/1/3/0/2/130291971/8085583.pdf
    • http://wasatchdiaperbank.com/uploads/1/3/0/3/130379251/247206.pdf
    • http://oldtobyllc.com/uploads/1/3/0/6/130639246/futuku-varav-duxotabeto-talav.pdf
    • http://equestriansupply.co.nz/uploads/1/3/0/2/130272483/kagipudo.pdf
    • http://kw4kd.salon225.com/uploads/1/3/0/6/130603692/130603692.html#edit+pdf+in+word+365

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002af4.bin
0e99617f440441e10b3bd588125dc1f3605641e9df2be69d5f520d4d4f7804c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF4 7848 bytes

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