Malicious PDF — malware analysis report

Static analysis result for SHA-256 9514350bb528cb30…

MALICIOUS

PDF

39.2 KB Authoring application: Karbon
MD5: 3784266b7b3af08b76c6a90bf8bfffb7 SHA-1: bab15f46d61d6b9e642359514ece39cfb0cc71a7 SHA-256: 9514350bb528cb30a9301c682b5bca8ae012991ffaa645dfaecc57918e4debe8
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. This technique is often used for SEO manipulation or to distribute malicious payloads. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, and the document body contained garbled text, making it difficult to ascertain a specific lure.

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://ministryofmissingsocks.com/uploads/1/3/0/4/130483184/1023104.pdf
    • http://designerfundraising.org/uploads/1/3/0/4/130483494/8498260.pdf
    • http://coopstraining.com/uploads/1/3/0/6/130639845/kakavajifozumelil.pdf
    • http://bubblebag-australia.net/uploads/1/3/0/6/130604528/gorubeso_kuvexexa_zasunobukezas.pdf
    • http://purposeisbaeshop.com/uploads/1/3/0/8/130813413/jimiwerobenilor.pdf
    • http://madfoxgroup.com/uploads/1/3/0/3/130313445/sugeso-zejuboxo.pdf
    • http://doorrush420.com/uploads/1/3/0/3/130324158/kewoxepugetekelu.pdf
    • http://myemilyknight.org/uploads/1/3/0/7/130775845/ruxuzoxavutusiwubop.pdf
    • http://mrsack.net/uploads/1/3/0/7/130775429/934564.pdf
    • http://adamscofair.com/uploads/1/3/0/6/130604687/daxavokekal-lekusodoza-tozabovosov-susotivi.pdf
    • http://www.thepaperaid.com/uploads/1/3/0/8/130874109/magufisu.pdf
    • http://alexwisephotography.com/uploads/1/3/0/4/130476564/fb3e33a0d8559.pdf
    • http://theyeardesigner.com/uploads/1/3/0/5/130551727/tujixizag.pdf
    • http://cheltenhammarket.co.uk/uploads/1/3/0/6/130604737/d38a9df7.pdf
    • http://sloaneswayze.com/uploads/1/3/0/3/130313619/2abc7f.pdf
    • http://thelegodocumentary.com/uploads/1/3/0/2/130272973/jurix-rakogusewesep-kepuwabutojal-wigoxobuw.pdf
    • http://historicalporttalbot.com/uploads/1/3/0/8/130814343/vaxiliviv.pdf
    • http://www.magicalspincasino.org/uploads/1/3/0/4/130476273/9282328.pdf
    • http://summervillepsych.com/uploads/1/3/0/7/130775795/wulovonagoroma.pdf
    • http://lineapalmsprings.com/uploads/1/3/0/8/130874629/9996626.pdf
    • http://frame-azinggrace.com/uploads/1/3/0/6/130603907/kewexikovu-niwawopamem.pdf
    • http://fungroupproduction.com/uploads/1/3/0/8/130874430/35732.pdf
    • http://www.hatesglitter.com/uploads/1/3/0/4/130488181/sulirover_ladol.pdf
    • http://wilmingtonladiesteawalk.org/uploads/1/3/0/3/130312984/130312984.html#cricket+world+cup+qualifiers+2018+points+table
    • http://historicalporttalbot.com/uploads/1/3/0/8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000375e.bin
1d97bb1a5437aeb7becbb54740cf68e399833a41903dff0f0261c7f7d536c5f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x375E 7716 bytes

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