Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ba14a812c3f79f6…

MALICIOUS

PDF

36.8 KB Authoring application: QPDF
MD5: 8284ce71c1714e8548bf6fec713d94e9 SHA-1: 3a66dc3ceabfb1cbd68e6a04be3a2da0c5dbe40e SHA-256: 2ba14a812c3f79f6451f9e96b2e5c8c06e6e1f25d3e53045addd28f301e2719d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm used to distribute malicious content or conduct phishing attacks. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious intent. No scripts were extracted from this sample, and the document body content is heavily obfuscated and unreadable.

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://www.stealthtv.com/uploads/1/3/0/5/130588906/buxolufedi.pdf
    • http://hostmaster.bvda.org.uk/uploads/1/3/0/7/130738963/bedafu.pdf
    • http://hostmaster.everyoneskitchen.com/uploads/1/3/0/8/130813395/3e0b8b7bfda5.pdf
    • http://locationsoundcanada.com/uploads/1/3/0/5/130543272/b87c839d4.pdf
    • http://thenakedchurch.com/uploads/1/3/0/6/130621164/poronuv.pdf
    • http://nailsbymargaret.com/uploads/1/3/0/5/130539165/muradeto.pdf
    • http://rcloud.net/uploads/1/3/0/8/130814157/1475666.pdf
    • http://engineersatlarge.com/uploads/1/3/0/2/130289663/a732018196c79.pdf
    • http://theego.org/uploads/1/3/0/7/130776043/8099666.pdf
    • http://catalinagardeazabal.com/uploads/1/3/0/6/130604758/deberojuxijoxizukip.pdf
    • http://vtsouthindian.com/uploads/1/3/0/5/130551000/xojizumevagaso.pdf
    • http://bfaog.com/uploads/1/3/0/5/130588654/wurulepaj.pdf
    • http://mybungalowshoa.com/uploads/1/3/0/6/130640027/dojulatamuxoj_kenilizoweje_bafolevinajulix_nodakogawoxol.pdf
    • http://highschools2003.com/uploads/1/3/0/6/130639549/tebazuja.pdf
    • http://heartstrings.shop/uploads/1/3/0/2/130289424/5595031.pdf
    • http://federalcreditunionblog.com/uploads/1/3/0/6/130639124/88b4adb202dd5a.pdf
    • http://beckiegkengle.com/uploads/1/3/0/7/130775181/613194.pdf
    • http://mef60.org/uploads/1/3/0/2/130272600/4248855.pdf
    • http://bgconstructionservices.org/uploads/1/3/0/8/130874386/lekim.pdf
    • http://mail.southernswan.net.au/uploads/1/3/0/8/130814341/2888161.pdf
    • http://bnhcontractingok.com/uploads/1/3/0/5/130541765/276d6.pdf
    • http://neuroimmunekids.org/uploads/1/3/0/7/130739986/fizefejig_bikutadene_gozun.pdf
    • http://axar-cars.com/uploads/1/3/0/5/130589297/40963af58f488.pdf
    • http://v90hr.bpmtc.com/uploads/1/3/0/5/130551639/130551639.html#ansible+ad+hoc+command+become
    • http://catalinagardeazabal.com/uploads/1/3/0/6/130604758/deberojuxijoxizuk

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f4d.bin
9b2ca1940d6aecd4afec5bed908a57f7726171fc08e1fa671692a22a308a73eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4D 7292 bytes

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