Malicious PDF — malware analysis report

Static analysis result for SHA-256 66440f6b25e220d4…

MALICIOUS

PDF

37.8 KB Authoring application: Solid Converter PDF
MD5: 3d2a84436a45b16ce82ad27f0aaefd21 SHA-1: 4e9f3a8a9b2ab008079b329a1bff8c39b33bdd96 SHA-256: 66440f6b25e220d4c2492f7e55150ed12d44ec62ab7a10c907c121be01d7b610
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of embedded external links, forming a link farm. The primary purpose appears to be directing users to potentially malicious websites hosted on services like Weebly, likely for phishing or malware distribution. No scripts were extracted from this sample.

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 https://sexepodexuriw.weebly.com/uploads/1/3/0/3/130379183/jepixirejip.pdf
    • https://supekulog.weebly.com/uploads/1/3/0/5/130543188/d3e2cd6.pdf
    • http://treenailsoakproducts.com/uploads/1/3/0/2/130272548/kevezuru.pdf
    • http://menurotrin.ru/uploads/2020/01/27/xogitigimuni_lupefatedarew.pdf
    • http://irishwolfoodle.com/uploads/1/3/0/5/130590054/gawedawidoxag.pdf
    • http://bomesumuk.rofrest.ru/uploads/2020/01/28/jefokovixasa_vubokaputuwobot_mumopur.pdf
    • http://lacinta.ru/uploads/1/3/0/4/130436458/87dbe65112e.pdf
    • http://chefsplatemalta.com/uploads/1/3/0/3/130323445/7747284.pdf
    • http://middlingsort.com/uploads/1/3/0/2/130291539/be211b86daf51.pdf
    • http://global4xloan.com/uploads/1/3/0/6/130639929/wasomimexedus-wifalolukipe-nulalovugun.pdf
    • http://zoommyrent.com/uploads/1/3/0/4/130488265/f37c331f16b.pdf
    • http://mup.rapmo.ru/uploads/2020/01/28/8582160.pdf
    • http://nokutisif.svea.pro/uploads/2020/01/27/2199186.pdf
    • http://pampanga-properties.com/uploads/1/3/0/2/130289171/9865758.pdf
    • http://pij.aeronika.com/uploads/2020/01/28/133269.pdf
    • http://buxedi.rucoolcash.xyz/uploads/2020/01/27/7540924.pdf
    • http://getefaj.trouversfr.info/uploads/2020/01/28/mewisu-pevojadajoj-pokudirasapofe-xemodimib.pdf
    • http://edutecagua.tech/uploads/2020/01/27/gujeg_dugojilaxitezev_rozugowe_vikezofebupe.pdf
    • https://jufegojero.weebly.com/uploads/1/3/0/2/130288316/a7674df2ac300c1.pdf
    • http://winer.apart5k.ru/uploads/2020/01/27/8795332.pdf
    • http://reboundat.com/uploads/1/3/0/4/130477702/130477702.html#ac+separation+grading+scale

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015b5.bin
82d25e97ec3e9cd2ad2e64399aab8cc7b05c21c495211ef80a0eae12fa5966d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15B5 7596 bytes

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